Enforce system wide sso providers (#9058)

We have recently introduced the possibility to specify workspace
specific auth providers.
I'm:
- introducing system wide auth providers (provided by clientConfig)
- making sure workspace specific auth providers belong to system wide
auth providers set

packages/twenty-server/src/engine/core-modules/client-config/client-config.entity.ts

@@ -1,6 +1,7 @@
 import { Field, ObjectType } from '@nestjs/graphql';
 
 import { CaptchaDriverType } from 'src/engine/core-modules/captcha/interfaces';
+import { AuthProviders } from 'src/engine/core-modules/workspace/dtos/public-workspace-data.output';
 
 @ObjectType()
 class Billing {
@@ -52,6 +53,9 @@ class ApiConfig {
 
 @ObjectType()
 export class ClientConfig {
+  @Field(() => AuthProviders, { nullable: false })
+  authProviders: AuthProviders;
+
   @Field(() => Billing, { nullable: false })
   billing: Billing;
 

packages/twenty-server/src/engine/core-modules/client-config/client-config.resolver.ts

@@ -22,6 +22,13 @@ export class ClientConfigResolver {
           'BILLING_FREE_TRIAL_DURATION_IN_DAYS',
         ),
       },
+      authProviders: {
+        google: this.environmentService.get('AUTH_GOOGLE_ENABLED'),
+        magicLink: false,
+        password: this.environmentService.get('AUTH_PASSWORD_ENABLED'),
+        microsoft: this.environmentService.get('AUTH_MICROSOFT_ENABLED'),
+        sso: [],
+      },
       isSSOEnabled: this.environmentService.get('AUTH_SSO_ENABLED'),
       signInPrefilled: this.environmentService.get('SIGN_IN_PREFILLED'),
       isMultiWorkspaceEnabled: this.environmentService.get(