Transport disconnect method (#753)

* Prevent reads from piling up

* Implement disconnect() method for all transports

packages/core/src/meshDevice.ts

@@ -818,6 +818,7 @@ export class MeshDevice {
 
     this.complete();
     await this.transport.toDevice.close();
+    await this.transport.disconnect();
   }
 
   /**

packages/core/src/types.ts

@@ -15,6 +15,7 @@ export type DeviceOutput = Packet | DebugLog;
 export interface Transport {
   toDevice: WritableStream<Uint8Array>;
   fromDevice: ReadableStream<DeviceOutput>;
+  disconnect(): Promise<void>;
 }
 
 export interface QueueItem {