Fix wrong path used by backend (#14352)

After moving a section on the frontend, this broke the path that was
sent by email on the backend.
This kind of error comes back every ~2-3 month under different forms so
we need a more robust solution: I moved routes to the shared folder,
that way we will share one common source of truth between the frontend
and the backend.

Fixes #14343

packages/twenty-front/src/modules/auth/utils/availableWorkspacesUtils.ts

@@ -1,10 +1,10 @@
-import {
-  type AvailableWorkspaces,
-  type AvailableWorkspace,
-} from '~/generated/graphql';
-import { AppPath } from '@/types/AppPath';
-import { isDefined } from 'twenty-shared/utils';
 import { generatePath } from 'react-router-dom';
+import { AppPath } from 'twenty-shared/types';
+import { isDefined } from 'twenty-shared/utils';
+import {
+  type AvailableWorkspace,
+  type AvailableWorkspaces,
+} from '~/generated/graphql';
 
 export const countAvailableWorkspaces = ({
   availableWorkspacesForSignIn,