[POC] add graphql query runner (#6747)

## Context
The goal is to replace pg_graphql with our own ORM wrapper (TwentyORM).
This PR tries to add some parsing logic to convert graphql requests to
send to the ORM to replace pg_graphql implementation.

---------

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

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/workspace-query-runner.module.ts

@@ -1,5 +1,7 @@
 import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
 
+import { GraphqlQueryRunnerModule } from 'src/engine/api/graphql/graphql-query-runner/graphql-query-runner.module';
 import { WorkspaceQueryBuilderModule } from 'src/engine/api/graphql/workspace-query-builder/workspace-query-builder.module';
 import { RecordPositionBackfillCommand } from 'src/engine/api/graphql/workspace-query-runner/commands/0-20-record-position-backfill.command';
 import { workspaceQueryRunnerFactories } from 'src/engine/api/graphql/workspace-query-runner/factories';
@@ -8,6 +10,8 @@ import { WorkspaceQueryHookModule } from 'src/engine/api/graphql/workspace-query
 import { AnalyticsModule } from 'src/engine/core-modules/analytics/analytics.module';
 import { AuthModule } from 'src/engine/core-modules/auth/auth.module';
 import { DuplicateModule } from 'src/engine/core-modules/duplicate/duplicate.module';
+import { FeatureFlagEntity } from 'src/engine/core-modules/feature-flag/feature-flag.entity';
+import { FeatureFlagModule } from 'src/engine/core-modules/feature-flag/feature-flag.module';
 import { FileModule } from 'src/engine/core-modules/file/file.module';
 import { ObjectMetadataRepositoryModule } from 'src/engine/object-metadata-repository/object-metadata-repository.module';
 import { WorkspaceDataSourceModule } from 'src/engine/workspace-datasource/workspace-datasource.module';
@@ -24,9 +28,12 @@ import { EntityEventsToDbListener } from './listeners/entity-events-to-db.listen
     WorkspaceDataSourceModule,
     WorkspaceQueryHookModule,
     ObjectMetadataRepositoryModule.forFeature([WorkspaceMemberWorkspaceEntity]),
+    TypeOrmModule.forFeature([FeatureFlagEntity], 'core'),
     AnalyticsModule,
     DuplicateModule,
     FileModule,
+    GraphqlQueryRunnerModule,
+    FeatureFlagModule,
   ],
   providers: [
     WorkspaceQueryRunnerService,

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/workspace-query-runner.service.ts

@@ -25,6 +25,7 @@ import {
 } from 'src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolvers-builder.interface';
 import { ObjectMetadataInterface } from 'src/engine/metadata-modules/field-metadata/interfaces/object-metadata.interface';
 
+import { GraphqlQueryRunnerService } from 'src/engine/api/graphql/graphql-query-runner/graphql-query-runner.service';
 import { WorkspaceQueryBuilderFactory } from 'src/engine/api/graphql/workspace-query-builder/workspace-query-builder.factory';
 import { QueryResultGettersFactory } from 'src/engine/api/graphql/workspace-query-runner/factories/query-result-getters/query-result-getters.factory';
 import { QueryRunnerArgsFactory } from 'src/engine/api/graphql/workspace-query-runner/factories/query-runner-args.factory';
@@ -42,6 +43,8 @@ import {
   WorkspaceQueryRunnerExceptionCode,
 } from 'src/engine/api/graphql/workspace-query-runner/workspace-query-runner.exception';
 import { DuplicateService } from 'src/engine/core-modules/duplicate/duplicate.service';
+import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
+import { FeatureFlagService } from 'src/engine/core-modules/feature-flag/services/feature-flag.service';
 import { EnvironmentService } from 'src/engine/integrations/environment/environment.service';
 import { ObjectRecordCreateEvent } from 'src/engine/integrations/event-emitter/types/object-record-create.event';
 import { ObjectRecordDeleteEvent } from 'src/engine/integrations/event-emitter/types/object-record-delete.event';
@@ -63,8 +66,8 @@ import {
 } from './interfaces/pg-graphql.interface';
 import { WorkspaceQueryRunnerOptions } from './interfaces/query-runner-option.interface';
 import {
-  PgGraphQLConfig,
   computePgGraphQLError,
+  PgGraphQLConfig,
 } from './utils/compute-pg-graphql-error.util';
 
 @Injectable()
@@ -83,6 +86,8 @@ export class WorkspaceQueryRunnerService {
     private readonly workspaceQueryHookService: WorkspaceQueryHookService,
     private readonly environmentService: EnvironmentService,
     private readonly duplicateService: DuplicateService,
+    private readonly featureFlagService: FeatureFlagService,
+    private readonly graphqlQueryRunnerService: GraphqlQueryRunnerService,
   ) {}
 
   async findMany<
@@ -96,6 +101,12 @@ export class WorkspaceQueryRunnerService {
     const { authContext, objectMetadataItem } = options;
     const start = performance.now();
 
+    const isQueryRunnerTwentyORMEnabled =
+      await this.featureFlagService.isFeatureEnabled(
+        FeatureFlagKey.IsQueryRunnerTwentyORMEnabled,
+        authContext.workspace.id,
+      );
+
     const hookedArgs =
       await this.workspaceQueryHookService.executePreQueryHooks(
         authContext,
@@ -110,6 +121,13 @@ export class WorkspaceQueryRunnerService {
       ResolverArgsType.FindMany,
     )) as FindManyResolverArgs<Filter, OrderBy>;
 
+    if (isQueryRunnerTwentyORMEnabled) {
+      return this.graphqlQueryRunnerService.findManyWithTwentyOrm(
+        computedArgs,
+        options,
+      );
+    }
+
     const query = await this.workspaceQueryBuilderFactory.findMany(
       computedArgs,
       {
@@ -119,6 +137,7 @@ export class WorkspaceQueryRunnerService {
     );
 
     const result = await this.execute(query, authContext.workspace.id);
+
     const end = performance.now();
 
     this.logger.log(