Add admin avatars and app logos (#20001)

## Summary
- Add user avatars and workspace logos to the admin general table and
workspace member detail view
- Show app icons in the admin app registrations table and reuse the
shared application display component
- Expose the needed avatar and logo fields through admin GraphQL queries
and backend lookup/statistics services
- Keep workspace fallback behavior consistent when no logo is set and
clean up a few local table styling duplicates

## Testing
- `./node_modules/.bin/tsc -p packages/twenty-front/tsconfig.json
--noEmit --pretty false`
- Manual UI verification of the admin general, workspace detail, and
apps tables

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/core-modules/file/file-url/file-url.service.ts

@@ -1,6 +1,7 @@
 import { Injectable } from '@nestjs/common';
 
 import { FileFolder } from 'twenty-shared/types';
+import { isDefined } from 'twenty-shared/utils';
 
 import {
   FileTokenJwtPayload,
@@ -8,6 +9,7 @@ import {
 } from 'src/engine/core-modules/auth/types/auth-context.type';
 import { JwtWrapperService } from 'src/engine/core-modules/jwt/services/jwt-wrapper.service';
 import { TwentyConfigService } from 'src/engine/core-modules/twenty-config/twenty-config.service';
+import { type WorkspaceEntity } from 'src/engine/core-modules/workspace/workspace.entity';
 
 @Injectable()
 export class FileUrlService {
@@ -16,6 +18,20 @@ export class FileUrlService {
     private readonly twentyConfigService: TwentyConfigService,
   ) {}
 
+  signWorkspaceLogoUrl(
+    workspace: Pick<WorkspaceEntity, 'id' | 'logoFileId'>,
+  ): string | null {
+    if (!isDefined(workspace.logoFileId)) {
+      return null;
+    }
+
+    return this.signFileByIdUrl({
+      fileId: workspace.logoFileId,
+      workspaceId: workspace.id,
+      fileFolder: FileFolder.CorePicture,
+    });
+  }
+
   signFileByIdUrl({
     fileId,
     workspaceId,