feat(server): add process memory usage metrics (#13148)

close CLOUD-235

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src="https://github.com/user-attachments/assets/6ea0fd89-ab32-42e3-a675-f00f9e5856ad"
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#### PR Dependency Tree


* **PR #13148** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Introduced a new monitoring service that automatically collects and
logs process memory usage statistics every minute.
* Enhanced system monitoring capabilities by integrating a global
monitoring module.
  * Added support for a new "process" scope in metric tracking.

* **Chores**
* Improved internal module organization by including the monitoring
module in the core functionality set.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/app.module.ts

@@ -36,6 +36,7 @@ import { DocRendererModule } from './core/doc-renderer';
 import { DocServiceModule } from './core/doc-service';
 import { FeatureModule } from './core/features';
 import { MailModule } from './core/mail';
+import { MonitorModule } from './core/monitor';
 import { NotificationModule } from './core/notification';
 import { PermissionModule } from './core/permission';
 import { QuotaModule } from './core/quota';
@@ -112,6 +113,7 @@ export const FunctionalityModules = [
   WebSocketModule,
   JobModule.forRoot(),
   ModelsModule,
+  MonitorModule,
 ];
 
 export class AppModuleBuilder {