feat(database): add created_at column to invitation table and update schema

- Introduced a new column "created_at" with a default timestamp to the "invitation" table.
- Updated the account schema to reflect this change, ensuring consistency across the database structure.
- Added corresponding metadata in the snapshot and journal files for versioning.

apps/dokploy/drizzle/0139_brave_bloodstorm.sql

@@ -0,0 +1 @@
+ALTER TABLE "invitation" ADD COLUMN "created_at" timestamp DEFAULT now() NOT NULL;

apps/dokploy/drizzle/meta/_journal.json

@@ -974,6 +974,13 @@
       "when": 1770324882572,
       "tag": "0138_pretty_ironclad",
       "breakpoints": true
+    },
+    {
+      "idx": 139,
+      "version": "7",
+      "when": 1770442690721,
+      "tag": "0139_brave_bloodstorm",
+      "breakpoints": true
     }
   ]
 }