feat: initial commit web-cad-neu with docker-compose, frontend and backend

backend/src/types/y-leveldb.d.ts

@@ -0,0 +1,11 @@
+declare module 'y-leveldb' {
+  import type * as Y from 'yjs';
+
+  export class LeveldbPersistence {
+    constructor(dbPath: string, opts?: Record<string, unknown>);
+    getYDoc(name: string): Promise<Y.Doc>;
+    storeUpdate(name: string, update: Uint8Array): Promise<number>;
+    destroy(): Promise<void>;
+    clearDocument(name: string): Promise<void>;
+  }
+}