Index v2 runner (#14537)

## Introduction
https://github.com/twentyhq/twenty/pull/14363
In this PR we're creating builder and runner for index metadata
Removing its previous integration within object builder

## Next:
- implem index impact on field and object metadata api
- Add integration testing coverage add integration test on index
- Implement uniqueness toggle in field metadata api
- add integration test on uniqueness

related to https://github.com/twentyhq/core-team-issues/issues/1344

packages/twenty-server/src/engine/metadata-modules/flat-field-metadata/utils/throw-on-field-input-transpilations-error.util.ts

@@ -24,6 +24,7 @@ export const throwOnFieldInputTranspilationsError: ThrowOnFieldInputTranspilatio
       throw new WorkspaceMigrationBuilderExceptionV2(
         {
           report: {
+            index: [],
             view: [],
             viewField: [],
             objectMetadata: [