feat: Added workspace-level impersonation module and functionality (#14360)

## Description

- This PR is focused on issue
https://github.com/twentyhq/core-team-issues/issues/1421
- Added workspace-level impersonation apart from current
server-level-impersonation
- Introduced WorkspaceImpersonationModule, including service and
resolver for user impersonation within workspaces.
- Enhanced AdminPanelService and AdminPanelResolver to support
impersonation logic, including authentication checks and token
generation.
- added Member Management Interface in settings/members table
- added GraphQL mutation for workspace-level impersonation



## Visual Proof

<img width="919" height="444" alt="Screenshot 2025-09-09 at 1 29 22 AM"
src="https://github.com/user-attachments/assets/a361c6eb-03de-48db-b68a-7d3a489fafde"
/>


https://github.com/user-attachments/assets/454bc1aa-8b8f-4de1-9304-7c147da71dd4


## Impersontion Cookie

<img width="1792" height="297" alt="Screenshot 2025-09-11 at 9 44 06 PM"
src="https://github.com/user-attachments/assets/a8a37d5e-d38d-4472-94a7-4e4b36fba14e"
/>



<img width="1235" height="1041" alt="Screenshot 2025-09-19 at 1 24
09 AM"
src="https://github.com/user-attachments/assets/875e8f9c-e0cb-404b-8291-8fadc6c2a163"
/>

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: etiennejouan <jouan.etienne@gmail.com>

packages/twenty-server/src/engine/metadata-modules/permissions/constants/permission-flag-type.constants.ts

@@ -8,6 +8,7 @@ export enum PermissionFlagType {
   ADMIN_PANEL = 'ADMIN_PANEL',
   SECURITY = 'SECURITY',
   WORKFLOWS = 'WORKFLOWS',
+  IMPERSONATE = 'IMPERSONATE',
 
   // Tool permissions
   SEND_EMAIL_TOOL = 'SEND_EMAIL_TOOL',

packages/twenty-server/src/engine/metadata-modules/permissions/permissions.service.ts

@@ -103,6 +103,7 @@ export class PermissionsService {
         [PermissionFlagType.SEND_EMAIL_TOOL]: false,
         [PermissionFlagType.IMPORT_CSV]: false,
         [PermissionFlagType.EXPORT_CSV]: false,
+        [PermissionFlagType.IMPERSONATE]: false,
       },
       objectsPermissions: {},
     }) as const satisfies UserWorkspacePermissions;