feat(web): add PocketBase backend with migrations and database

web/backend/pb_migrations/1759312125_updated_users.js

@@ -0,0 +1,36 @@
+/// <reference path="../pb_data/types.d.ts" />
+migrate((app) => {
+  const collection = app.findCollectionByNameOrId("_pb_users_auth_")
+
+  // update field
+  collection.fields.addAt(4, new Field({
+    "exceptDomains": null,
+    "hidden": false,
+    "id": "email3885137012",
+    "name": "email",
+    "onlyDomains": null,
+    "presentable": false,
+    "required": false,
+    "system": true,
+    "type": "email"
+  }))
+
+  return app.save(collection)
+}, (app) => {
+  const collection = app.findCollectionByNameOrId("_pb_users_auth_")
+
+  // update field
+  collection.fields.addAt(4, new Field({
+    "exceptDomains": null,
+    "hidden": false,
+    "id": "email3885137012",
+    "name": "email",
+    "onlyDomains": null,
+    "presentable": false,
+    "required": true,
+    "system": true,
+    "type": "email"
+  }))
+
+  return app.save(collection)
+})