feat: message folders control (#14144)

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

packages/twenty-server/src/engine/core-modules/feature-flag/constants/public-feature-flag.const.ts

@@ -30,6 +30,15 @@ export const PUBLIC_FEATURE_FLAGS: PublicFeatureFlag[] = [
       imagePath: 'https://twenty.com/images/lab/is-workflow-branch-enabled.png',
     },
   },
+  {
+    key: FeatureFlagKey.IS_MESSAGE_FOLDER_CONTROL_ENABLED,
+    metadata: {
+      label: 'Message Folder Control',
+      description: 'Control which folders are synced',
+      imagePath:
+        'https://twenty.com/images/lab/is-message-folder-control-enabled.png',
+    },
+  },
   ...(process.env.CLOUDFLARE_API_KEY
     ? [
         // {

packages/twenty-server/src/engine/core-modules/feature-flag/enums/feature-flag-key.enum.ts

@@ -14,4 +14,5 @@ export enum FeatureFlagKey {
   IS_WORKSPACE_MIGRATION_V2_ENABLED = 'IS_WORKSPACE_MIGRATION_V2_ENABLED',
   IS_API_KEY_ROLES_ENABLED = 'IS_API_KEY_ROLES_ENABLED',
   IS_PAGE_LAYOUT_ENABLED = 'IS_PAGE_LAYOUT_ENABLED',
+  IS_MESSAGE_FOLDER_CONTROL_ENABLED = 'IS_MESSAGE_FOLDER_CONTROL_ENABLED',
 }