Refactor client config (#529)

* Refactor client config

* Fix server tests

* Fix lint

server/src/core/client-config/client-config.module.ts

@@ -0,0 +1,7 @@
+import { Module } from '@nestjs/common';
+import { ClientConfigResolver } from './client-config.resolver';
+
+@Module({
+  providers: [ClientConfigResolver],
+})
+export class ClientConfigModule {}