chore: merge blocksuite source code (#9213)

blocksuite/framework/sync/src/awareness/engine.ts

@@ -0,0 +1,18 @@
+import type { Awareness } from 'y-protocols/awareness';
+
+import type { AwarenessSource } from './source.js';
+
+export class AwarenessEngine {
+  constructor(
+    readonly awareness: Awareness,
+    readonly sources: AwarenessSource[]
+  ) {}
+
+  connect() {
+    this.sources.forEach(source => source.connect(this.awareness));
+  }
+
+  disconnect() {
+    this.sources.forEach(source => source.disconnect());
+  }
+}