Add connections stats

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@hibas123/realtimedb",
-  "version": "2.0.0-beta.20",
+  "version": "2.0.0-beta.21",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

src/database/database.ts

@@ -104,6 +104,8 @@ export class Database {
       return this.#rules;
    }
 
+   public connections = 0;
+
    private locks = new DocumentLock();
    public collectionLocks = new DocumentLock();
 

src/websocket.ts

@@ -151,8 +151,9 @@ export class WebsocketConnectionManager {
             Logging.error(err);
          }
       });
-
+      db.connections++;
       socket.on("close", () => {
+         db.connections--;
          Logging.log(`${session.id} has disconnected!`);
          session.subscriptions.forEach((unsubscribe) => unsubscribe());
          session.subscriptions.clear();