feat: add getStats to PeerConnection (#11)

Co-authored-by: Bryce Tham <[email protected]>

src/peer-connection.ts

@@ -263,6 +263,18 @@ class PeerConnection extends EventEmitter<PeerConnectionEventHandlers> {
     return this.pc.getTransceivers();
   }
 
+  /**
+   * Get statistics about either the overall connection or about the specified MediaStreamTrack.
+   *
+   * @param selector - An optional MediaStreamTrack for which to gather statistics. If not provided,
+   * statistics will be gathered for the entire underlying RTCPeerConnection.
+   * @returns - A Promise which resolves with an RTCStatsReport object providing connection
+   * statistics.
+   */
+  getStats(selector?: MediaStreamTrack): Promise<RTCStatsReport> {
+    return this.pc.getStats(selector);
+  }
+
   /**
    * Returns a string that describes the connections' ICE gathering state.
    *