initial setup for google signin signup integration

backend/package.json

@@ -5,7 +5,6 @@
     "@octokit/rest": "^19.0.5",
     "@sentry/node": "^7.45.0",
     "@sentry/tracing": "^7.46.0",
-    "@sentry/node": "^7.41.0",
     "@types/crypto-js": "^4.1.1",
     "@types/libsodium-wrappers": "^0.7.10",
     "argon2": "^0.30.3",
@@ -22,6 +21,7 @@
     "dotenv": "^16.0.1",
     "express": "^4.18.1",
     "express-rate-limit": "^6.7.0",
+    "express-session": "^1.17.3",
     "express-validator": "^6.14.2",
     "handlebars": "^4.7.7",
     "helmet": "^5.1.1",
@@ -33,6 +33,8 @@
     "lodash": "^4.17.21",
     "mongoose": "^6.10.4",
     "nodemailer": "^6.8.0",
+    "passport": "^0.6.0",
+    "passport-google-oidc": "^0.1.0",
     "posthog-node": "^2.6.0",
     "query-string": "^7.1.3",
     "request-ip": "^3.3.0",
@@ -82,11 +84,13 @@
     "@types/cookie-parser": "^1.4.3",
     "@types/cors": "^2.8.12",
     "@types/express": "^4.17.14",
+    "@types/express-session": "^1.17.7",
     "@types/jest": "^29.5.0",
     "@types/jsonwebtoken": "^8.5.9",
     "@types/lodash": "^4.14.191",
     "@types/node": "^18.11.3",
     "@types/nodemailer": "^6.4.6",
+    "@types/passport": "^1.0.12",
     "@types/supertest": "^2.0.12",
     "@types/swagger-jsdoc": "^6.0.1",
     "@types/swagger-ui-express": "^4.1.3",