[permissions] Add permission gates on workspace-invitations (#10394)

Adding permission gates on all workspace-invitations endpoints:
sendInvitation, resendInvitation, deleteWorkspaceInvitation,
findWorkspaceInvitations (the latter being from my understanding only
used to list the invitations to then re-send them or detee them).

+ tests on Api & webhooks permission gates

packages/twenty-server/src/engine/core-modules/workspace-invitation/workspace-invitation.module.ts

@@ -4,12 +4,14 @@ import { NestjsQueryTypeOrmModule } from '@ptc-org/nestjs-query-typeorm';
 
 import { AppToken } from 'src/engine/core-modules/app-token/app-token.entity';
 import { DomainManagerModule } from 'src/engine/core-modules/domain-manager/domain-manager.module';
+import { FeatureFlagModule } from 'src/engine/core-modules/feature-flag/feature-flag.module';
 import { FileModule } from 'src/engine/core-modules/file/file.module';
 import { OnboardingModule } from 'src/engine/core-modules/onboarding/onboarding.module';
 import { UserWorkspace } from 'src/engine/core-modules/user-workspace/user-workspace.entity';
 import { WorkspaceInvitationService } from 'src/engine/core-modules/workspace-invitation/services/workspace-invitation.service';
 import { WorkspaceInvitationResolver } from 'src/engine/core-modules/workspace-invitation/workspace-invitation.resolver';
 import { Workspace } from 'src/engine/core-modules/workspace/workspace.entity';
+import { PermissionsModule } from 'src/engine/metadata-modules/permissions/permissions.module';
 
 @Module({
   imports: [
@@ -20,6 +22,8 @@ import { Workspace } from 'src/engine/core-modules/workspace/workspace.entity';
     ),
     FileModule,
     OnboardingModule,
+    PermissionsModule,
+    FeatureFlagModule,
   ],
   exports: [WorkspaceInvitationService],
   providers: [WorkspaceInvitationService, WorkspaceInvitationResolver],

packages/twenty-server/src/engine/core-modules/workspace-invitation/workspace-invitation.resolver.ts

@@ -1,6 +1,8 @@
-import { UseGuards } from '@nestjs/common';
+import { UseFilters, UseGuards } from '@nestjs/common';
 import { Args, Mutation, Query, Resolver } from '@nestjs/graphql';
 
+import { SettingsFeatures } from 'twenty-shared';
+
 import { FileService } from 'src/engine/core-modules/file/services/file.service';
 import { User } from 'src/engine/core-modules/user/user.entity';
 import { SendInvitationsOutput } from 'src/engine/core-modules/workspace-invitation/dtos/send-invitations.output';
@@ -9,12 +11,18 @@ import { WorkspaceInvitationService } from 'src/engine/core-modules/workspace-in
 import { Workspace } from 'src/engine/core-modules/workspace/workspace.entity';
 import { AuthUser } from 'src/engine/decorators/auth/auth-user.decorator';
 import { AuthWorkspace } from 'src/engine/decorators/auth/auth-workspace.decorator';
+import { SettingsPermissionsGuard } from 'src/engine/guards/settings-permissions.guard';
 import { UserAuthGuard } from 'src/engine/guards/user-auth.guard';
 import { WorkspaceAuthGuard } from 'src/engine/guards/workspace-auth.guard';
+import { PermissionsGraphqlApiExceptionFilter } from 'src/engine/metadata-modules/permissions/utils/permissions-graphql-api-exception.filter';
 
 import { SendInvitationsInput } from './dtos/send-invitations.input';
 
-@UseGuards(WorkspaceAuthGuard)
+@UseGuards(
+  WorkspaceAuthGuard,
+  SettingsPermissionsGuard(SettingsFeatures.WORKSPACE_USERS),
+)
+@UseFilters(PermissionsGraphqlApiExceptionFilter)
 @Resolver()
 export class WorkspaceInvitationResolver {
   constructor(