[feat][Remote objects] Edit a connection (for pg) (#5210)

## Context
#4774 

## How was it tested
Locally

## In further PRs
- Update connection status upon page change
- Adapt Info banner to dark mode
- placeholders for form

packages/twenty-server/src/engine/metadata-modules/remote-server/utils/build-update-remote-server-raw-query.utils.ts

@@ -1,10 +1,12 @@
+import { BadRequestException } from '@nestjs/common';
+
 import { isDefined } from 'class-validator';
 
 import {
   RemoteServerEntity,
   RemoteServerType,
-  UserMappingOptions,
 } from 'src/engine/metadata-modules/remote-server/remote-server.entity';
+import { UserMappingOptionsInput } from 'src/engine/metadata-modules/remote-server/utils/user-mapping-options.utils';
 
 export type DeepPartial<T> = {
   [P in keyof T]?: DeepPartial<T[P]>;
@@ -13,7 +15,7 @@ export type DeepPartial<T> = {
 const buildUserMappingOptionsQuery = (
   parameters: any[],
   parametersPositions: object,
-  userMappingOptions: DeepPartial<UserMappingOptions>,
+  userMappingOptions: DeepPartial<UserMappingOptionsInput>,
 ): string | null => {
   const shouldUpdateUserMappingOptionsPassword = isDefined(
     userMappingOptions?.password,
@@ -130,6 +132,10 @@ export const updateRemoteServerRawQuery = (
     options.push(fwdOptionsQuery);
   }
 
+  if (options.length < 1) {
+    throw new BadRequestException('No fields to update');
+  }
+
   const rawQuery = `UPDATE metadata."remoteServer" SET ${options.join(
     ', ',
   )} WHERE "id"= $1 RETURNING *`;

packages/twenty-server/src/engine/metadata-modules/remote-server/utils/user-mapping-options.utils.ts

@@ -1,4 +1,4 @@
-import { InputType, Field } from '@nestjs/graphql';
+import { InputType, Field, ObjectType } from '@nestjs/graphql';
 
 import { IsOptional } from 'class-validator';
 
@@ -12,3 +12,10 @@ export class UserMappingOptionsInput {
   @Field(() => String, { nullable: true })
   password: string;
 }
+
+@ObjectType()
+export class GetUserMappingOptions {
+  @IsOptional()
+  @Field(() => String, { nullable: true })
+  username: string;
+}