[BREAKING_CHANGE/GRAPHQL/OBJECT_METADATA_CREATE_ONE] Remove object/fields/view-fields v1 implementation (#15823)

# Introduction
Remove the v2 feature flag for view-field field-metadata and
object-metadata metadata entities

## Some details
- Disabled nestjs-query for object metadata creation and explicitly
calling it
- removed all v1 integration tests files

## Remarks
Not remove v2 referencing in both filenaming right now will handle that
globally later

## Breaking change
Due to object metadata resolver createOne standardization had to rename
the input from `CreateObjectInput` to `CreateOneObjectInput`

packages/twenty-server/src/engine/metadata-modules/flat-field-metadata/services/flat-field-metadata-type-validator.service.ts

@@ -3,7 +3,6 @@ import { Injectable } from '@nestjs/common';
 import { msg } from '@lingui/core/macro';
 import { isDefined } from 'class-validator';
 
-import { FeatureFlagService } from 'src/engine/core-modules/feature-flag/services/feature-flag.service';
 import { FieldMetadataExceptionCode } from 'src/engine/metadata-modules/field-metadata/field-metadata.exception';
 import { type FlatFieldMetadataTypeValidator } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata-type-validator.type';
 import { FlatFieldMetadataValidationError } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata-validation-error.type';
@@ -17,7 +16,7 @@ const DEFAULT_NO_VALIDATION = async (): Promise<
 
 @Injectable()
 export class FlatFieldMetadataTypeValidatorService {
-  constructor(private readonly featureFlagService: FeatureFlagService) {}
+  constructor() {}
 
   private readonly FIELD_METADATA_TYPE_VALIDATOR_HASHMAP: FlatFieldMetadataTypeValidator =
     {