internal: incomplete vault systems behind feature flag (#2340)

packages/services/src/Domain/InternalFeatures/InternalFeatureService.ts

@@ -0,0 +1,24 @@
+import { InternalFeature } from './InternalFeature'
+import { InternalFeatureServiceInterface } from './InternalFeatureServiceInterface'
+
+let sharedInstance: InternalFeatureServiceInterface | undefined
+
+export class InternalFeatureService implements InternalFeatureServiceInterface {
+  static get(): InternalFeatureServiceInterface {
+    if (!sharedInstance) {
+      sharedInstance = new InternalFeatureService()
+    }
+    return sharedInstance
+  }
+
+  private readonly enabledFeatures: Set<InternalFeature> = new Set()
+
+  isFeatureEnabled(feature: InternalFeature): boolean {
+    return this.enabledFeatures.has(feature)
+  }
+
+  enableFeature(feature: InternalFeature): void {
+    console.warn(`Enabling internal feature: ${feature}`)
+    this.enabledFeatures.add(feature)
+  }
+}