feat: expose getCurrentConnectionType with ConnectionType type (#80)

Co-authored-by: kwasniow <[email protected]>

src/peer-connection.ts

@@ -404,4 +404,4 @@ class PeerConnection extends EventEmitter<PeerConnectionEventHandlers> {
 }
 
 export { ConnectionState } from './connection-state-handler';
-export { MediaStreamTrackKind, PeerConnection, RTCDataChannelOptions };
+export { ConnectionType, MediaStreamTrackKind, PeerConnection, RTCDataChannelOptions };