feat(*): allow to select auth providers + add multiworkspace with subdomain management (#8656)

## Summary
Add support for multi-workspace feature and adjust configurations and
states accordingly.
- Introduced new state isMultiWorkspaceEnabledState.
- Updated ClientConfigProviderEffect component to handle
multi-workspace.
- Modified GraphQL schema and queries to include multi-workspace related
configurations.
- Adjusted server environment variables and their respective
documentation to support multi-workspace toggle.
- Updated server-side logic to handle new multi-workspace configurations
and conditions.

packages/twenty-front/src/modules/client-config/graphql/queries/getClientConfig.ts

@@ -3,19 +3,16 @@ import { gql } from '@apollo/client';
 export const GET_CLIENT_CONFIG = gql`
   query GetClientConfig {
     clientConfig {
-      authProviders {
-        google
-        password
-        microsoft
-        sso
-      }
       billing {
         isBillingEnabled
         billingUrl
         billingFreeTrialDurationInDays
       }
       signInPrefilled
-      signUpDisabled
+      isMultiWorkspaceEnabled
+      isSSOEnabled
+      defaultSubdomain
+      frontDomain
       debugMode
       analyticsEnabled
       support {