Add simple docs for Infisical EE

docs/mint.json

@@ -191,6 +191,7 @@
             "self-hosting/guides/mongo-to-postgres"
           ]
         },
+        "self-hosting/ee",
         "self-hosting/faq"
       ]
     },

docs/self-hosting/ee.mdx

@@ -0,0 +1,28 @@
+---
+title: "Using Infisical EE"
+description: "How to activate Infisical Enterprise Edition (EE) features"
+---
+
+While most features in Infisical are free to use, others are paid and require purchasing an enterprise license to use them.
+
+This guide walks through how you can use these paid features in Infisical.
+
+<Steps>
+    <Step title="Purchase a license">
+        Start by either signing up for a free demo [here](https://infisical.com/schedule-demo) or contacting team@infisical.com to purchase a license.
+
+        Once purchased, you will be issued a license key.
+    </Step>
+    <Step title="Activate the license">
+        Depending on whether or not the environment where Infisical is deployed has internet access, you may be issued a regular license or an offline license.
+        
+        - If using a regular license, you should set the value of the environment variable `LICENSE_KEY` in Infisical to the issued license key.
+        - If using an offline license, you should set the value of the environment variable `LICENSE_KEY_OFFLINE` in Infisical to the issued license key.
+
+        Once your instance starts up, the license key will be validated and you’ll be able to use the paid features.
+
+        <Note>
+            Once the license expires, Infisical will continue to run, but EE features will be disabled until the license is renewed or a new one is purchased.
+        </Note>
+    </Step>
+</Steps>