feat: initial installation flow

backend/package-lock.json

@@ -33,6 +33,7 @@
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         "@serdnam/pino-cloudwatch-transport": "^1.0.4",
         "@sindresorhus/slugify": "1.1.0",
+        "@slack/oauth": "^3.0.1",
         "@team-plain/typescript-sdk": "^4.6.1",
         "@ucast/mongo2js": "^1.3.4",
         "ajv": "^8.12.0",
@@ -5868,6 +5869,78 @@
         "node": ">=8"
       }
     },
+    "node_modules/@slack/logger": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@slack/logger/-/logger-4.0.0.tgz",
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+      "dependencies": {
+        "@types/node": ">=18.0.0"
+      },
+      "engines": {
+        "node": ">= 18",
+        "npm": ">= 8.6.0"
+      }
+    },
+    "node_modules/@slack/oauth": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/@slack/oauth/-/oauth-3.0.1.tgz",
+      "integrity": "sha512-TuR9PI6bYKX6qHC7FQI4keMnhj45TNfSNQtTU3mtnHUX4XLM2dYLvRkUNADyiLTle2qu2rsOQtCIsZJw6H0sDA==",
+      "dependencies": {
+        "@slack/logger": "^4",
+        "@slack/web-api": "^7.3.4",
+        "@types/jsonwebtoken": "^9",
+        "@types/node": ">=18",
+        "jsonwebtoken": "^9",
+        "lodash.isstring": "^4"
+      },
+      "engines": {
+        "node": ">=18",
+        "npm": ">=8.6.0"
+      }
+    },
+    "node_modules/@slack/types": {
+      "version": "2.12.0",
+      "resolved": "https://registry.npmjs.org/@slack/types/-/types-2.12.0.tgz",
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+      "engines": {
+        "node": ">= 12.13.0",
+        "npm": ">= 6.12.0"
+      }
+    },
+    "node_modules/@slack/web-api": {
+      "version": "7.3.4",
+      "resolved": "https://registry.npmjs.org/@slack/web-api/-/web-api-7.3.4.tgz",
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+      "dependencies": {
+        "@slack/logger": "^4.0.0",
+        "@slack/types": "^2.9.0",
+        "@types/node": ">=18.0.0",
+        "@types/retry": "0.12.0",
+        "axios": "^1.7.4",
+        "eventemitter3": "^5.0.1",
+        "form-data": "^4.0.0",
+        "is-electron": "2.2.2",
+        "is-stream": "^2",
+        "p-queue": "^6",
+        "p-retry": "^4",
+        "retry": "^0.13.1"
+      },
+      "engines": {
+        "node": ">= 18",
+        "npm": ">= 8.6.0"
+      }
+    },
+    "node_modules/@slack/web-api/node_modules/is-stream": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-2.0.1.tgz",
+      "integrity": "sha512-hFoiJiTl63nn+kstHGBtewWSKnQLpyb155KHheA1l39uvtO9nWIop1p3udqPcUd/xbF1VLMO4n7OI6p7RbngDg==",
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/@smithy/abort-controller": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/@smithy/abort-controller/-/abort-controller-3.1.1.tgz",
@@ -7073,6 +7146,11 @@
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       "dev": true
     },
+    "node_modules/@types/retry": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/@types/retry/-/retry-0.12.0.tgz",
+      "integrity": "sha512-wWKOClTTiizcZhXnPY4wikVAwmdYHp8q6DmC+EJUzAMsycb7HB32Kh9RN4+0gExjmPmZSAQjgURXIGATPegAvA=="
+    },
     "node_modules/@types/safe-regex": {
       "version": "1.1.6",
       "resolved": "https://registry.npmjs.org/@types/safe-regex/-/safe-regex-1.1.6.tgz",
@@ -10251,6 +10329,11 @@
         "node": ">=6"
       }
     },
+    "node_modules/eventemitter3": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-5.0.1.tgz",
+      "integrity": "sha512-GWkBvjiSZK87ELrYOSESUYeVIc9mvLLf/nXalMOS5dYrgZq9o5OVkbZAVM06CVxYsCwH9BDZFPlQTlPA1j4ahA=="
+    },
     "node_modules/events": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/events/-/events-3.3.0.tgz",
@@ -11998,6 +12081,11 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/is-electron": {
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/is-electron/-/is-electron-2.2.2.tgz",
+      "integrity": "sha512-FO/Rhvz5tuw4MCWkpMzHFKWD2LsfHzIb7i6MdPYZ/KW7AlxawyLkqdy+jPZP1WubqEADE3O4FUENlJHDfQASRg=="
+    },
     "node_modules/is-extglob": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
@@ -13861,6 +13949,14 @@
         "node": ">=14.6"
       }
     },
+    "node_modules/p-finally": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/p-finally/-/p-finally-1.0.0.tgz",
+      "integrity": "sha512-LICb2p9CB7FS+0eR1oqWnHhp0FljGLZCWBE9aix0Uye9W8LTQPwMTYVGWQWIw9RdQiDg4+epXQODwIYJtSJaow==",
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "node_modules/p-is-promise": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/p-is-promise/-/p-is-promise-3.0.0.tgz",
@@ -13899,6 +13995,38 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/p-queue": {
+      "version": "6.6.2",
+      "resolved": "https://registry.npmjs.org/p-queue/-/p-queue-6.6.2.tgz",
+      "integrity": "sha512-RwFpb72c/BhQLEXIZ5K2e+AhgNVmIejGlTgiB9MzZ0e93GRvqZ7uSi0dvRF7/XIXDeNkra2fNHBxTyPDGySpjQ==",
+      "dependencies": {
+        "eventemitter3": "^4.0.4",
+        "p-timeout": "^3.2.0"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/p-queue/node_modules/eventemitter3": {
+      "version": "4.0.7",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
+      "integrity": "sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw=="
+    },
+    "node_modules/p-retry": {
+      "version": "4.6.2",
+      "resolved": "https://registry.npmjs.org/p-retry/-/p-retry-4.6.2.tgz",
+      "integrity": "sha512-312Id396EbJdvRONlngUx0NydfrIQ5lsYu0znKVUzVvArzEIt08V1qhtyESbGVd1FGX7UKtiFp5uwKZdM8wIuQ==",
+      "dependencies": {
+        "@types/retry": "0.12.0",
+        "retry": "^0.13.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/p-throttle": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/p-throttle/-/p-throttle-5.1.0.tgz",
@@ -13910,6 +14038,17 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/p-timeout": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/p-timeout/-/p-timeout-3.2.0.tgz",
+      "integrity": "sha512-rhIwUycgwwKcP9yTOOFK/AKsAopjjCakVqLHePO3CC6Mir1Z99xT+R63jZxAT5lFZLa2inS5h+ZS2GvR99/FBg==",
+      "dependencies": {
+        "p-finally": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/p-try": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
@@ -15260,6 +15399,14 @@
         "node": ">=4"
       }
     },
+    "node_modules/retry": {
+      "version": "0.13.1",
+      "resolved": "https://registry.npmjs.org/retry/-/retry-0.13.1.tgz",
+      "integrity": "sha512-XQBQ3I8W1Cge0Seh+6gjj03LbmRFWuoszgK9ooCpwYIrhhoO80pfq4cUkU5DkknwfOfFteRwlZ56PYOGYyFWdg==",
+      "engines": {
+        "node": ">= 4"
+      }
+    },
     "node_modules/reusify": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",