fix: add device connection cancellation (#106)

Fixed an issue where pressing the connect button again did not cancel
the connection process. The `selectToConnect` method now correctly
handles connection cancellation by resetting the connection target if it
is already set.

Closes #104

Co-authored-by: Tomás Grüner <[email protected]>

Author: pgallino

src/types/devices/device.ts

@@ -179,6 +179,10 @@ export abstract class Device extends Sprite {
   }
 
   selectToConnect() {
+    if (Device.connectionTarget) {
+      Device.connectionTarget = null;
+      return;
+    }
     Device.connectionTarget = this;
   }