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-front/src/modules/apollo/utils/getTokenPair.ts

@@ -1,16 +1,7 @@
 import { isDefined } from 'twenty-shared/utils';
 import { type AuthTokenPair } from '~/generated/graphql';
 import { cookieStorage } from '~/utils/cookie-storage';
-
-const isValidAuthTokenPair = (tokenPair: any): tokenPair is AuthTokenPair => {
-  return (
-    tokenPair &&
-    typeof tokenPair === 'object' &&
-    tokenPair.accessOrWorkspaceAgnosticToken &&
-    typeof tokenPair.accessOrWorkspaceAgnosticToken === 'object' &&
-    typeof tokenPair.accessOrWorkspaceAgnosticToken.token === 'string'
-  );
-};
+import { isValidAuthTokenPair } from './isValidAuthTokenPair';
 
 export const getTokenPair = (): AuthTokenPair | undefined => {
   const stringTokenPair = cookieStorage.getItem('tokenPair');

packages/twenty-front/src/modules/apollo/utils/isValidAuthTokenPair.ts

@@ -0,0 +1,13 @@
+import { type AuthTokenPair } from '~/generated/graphql';
+
+export const isValidAuthTokenPair = (
+  tokenPair: any,
+): tokenPair is AuthTokenPair => {
+  return (
+    tokenPair &&
+    typeof tokenPair === 'object' &&
+    tokenPair.accessOrWorkspaceAgnosticToken &&
+    typeof tokenPair.accessOrWorkspaceAgnosticToken === 'object' &&
+    typeof tokenPair.accessOrWorkspaceAgnosticToken.token === 'string'
+  );
+};