[feat] Add updateRemoteServer endpoint (#5148)

## Context
#4765 

Following investigations
([#5083](https://github.com/twentyhq/twenty/issues/5083)) we decided to
restrict updates of server from which zero tables have been synchronized
only

## How was it tested
Locally with /metadata
1. Updating a database that already has synchronized tables
<img width="1072" alt="Capture d’écran 2024-04-24 à 16 16 05"
src="https://github.com/twentyhq/twenty/assets/51697796/f9a84c34-2dcd-4f3c-b0bc-b710abae5021">

2. Updating a database that has no synchronized tables
<img width="843" alt="Capture d’écran 2024-04-24 à 16 17 28"
src="https://github.com/twentyhq/twenty/assets/51697796/f320fe03-a6bc-4724-bcd0-4e89d3ac31f5">
+ tested that the connection works well

packages/twenty-server/src/engine/metadata-modules/field-metadata/field-metadata.service.ts

@@ -39,8 +39,8 @@ import {
 import { DeleteOneFieldInput } from 'src/engine/metadata-modules/field-metadata/dtos/delete-field.input';
 import { computeColumnName } from 'src/engine/metadata-modules/field-metadata/utils/compute-column-name.util';
 import { assertMutationNotOnRemoteObject } from 'src/engine/metadata-modules/object-metadata/utils/assert-mutation-not-on-remote-object.util';
-import { validateString } from 'src/engine/metadata-modules/remote-server/utils/validate-remote-server-input';
 import { InvalidStringException } from 'src/engine/metadata-modules/errors/InvalidStringException';
+import { validateMetadataName } from 'src/engine/metadata-modules/utils/validate-metadata-name.utils';
 
 import {
   FieldMetadataEntity,
@@ -543,7 +543,7 @@ export class FieldMetadataService extends TypeOrmQueryService<FieldMetadataEntit
   >(fieldMetadataInput: T): T {
     if (fieldMetadataInput.name) {
       try {
-        validateString(fieldMetadataInput.name);
+        validateMetadataName(fieldMetadataInput.name);
       } catch (error) {
         if (error instanceof InvalidStringException) {
           throw new BadRequestException(