add content service and core config

src/modules/core/services/config.service.ts

@@ -0,0 +1,31 @@
+import { Global, Injectable, Module } from '@nestjs/common';
+import { get } from 'lodash';
+
+import { AppController } from '@/app.controller';
+import { AppService } from '@/app.service';
+import { ContentModule } from '@/modules/content/content.module';
+
+const config: Record<string, any> = {
+    name: 'ray',
+};
+
+@Injectable()
+export class ConfigService {
+    get<T>(key: string, defaultValue?: T): T | undefined {
+        return get(config, key, defaultValue);
+    }
+}
+
+@Global()
+@Module({
+    providers: [ConfigService],
+    exports: [ConfigService],
+})
+export class CoreModule {}
+
+@Module({
+    imports: [ContentModule, CoreModule],
+    providers: [AppService],
+    controllers: [AppController],
+})
+export class AppModule {}