Timestamp column migration in all workspace schema tables (#13679)

fixes https://github.com/twentyhq/private-issues/issues/288

Test with : 
`npx nx run twenty-server:command
upgrade:1-3:update-timestamp-column-type-in-workspace-schema`

packages/twenty-server/src/engine/api/graphql/workspace-schema-builder/utils/__tests__/get-field-metadata-type.spec.ts

@@ -1,23 +0,0 @@
-import { FieldMetadataType } from 'twenty-shared/types';
-
-import { getFieldMetadataType } from 'src/engine/api/graphql/workspace-schema-builder/utils/get-field-metadata-type.util';
-
-describe('getFieldMetadataType', () => {
-  it.each([
-    ['uuid', FieldMetadataType.UUID],
-    ['timestamptz', FieldMetadataType.DATE_TIME],
-  ])(
-    'should return correct FieldMetadataType for type %s',
-    (type, expectedMetadataType) => {
-      expect(getFieldMetadataType(type)).toBe(expectedMetadataType);
-    },
-  );
-
-  it('should throw an error for an unknown type', () => {
-    const unknownType = 'unknownType';
-
-    expect(() => getFieldMetadataType(unknownType)).toThrow(
-      `Unknown type ${unknownType}`,
-    );
-  });
-});

packages/twenty-server/src/engine/api/graphql/workspace-schema-builder/utils/get-field-metadata-type.util.ts

@@ -1,16 +0,0 @@
-import { FieldMetadataType } from 'twenty-shared/types';
-const typeOrmTypeMapping = new Map<string, FieldMetadataType>([
-  ['uuid', FieldMetadataType.UUID],
-  ['timestamptz', FieldMetadataType.DATE_TIME],
-  // Add more types here if we need to support more than id, and createdAt/updatedAt/deletedAt
-]);
-
-export const getFieldMetadataType = (type: string) => {
-  const fieldType = typeOrmTypeMapping.get(type);
-
-  if (fieldType === undefined || fieldType === null) {
-    throw new Error(`Unknown type ${type}`);
-  }
-
-  return fieldType;
-};