feat: Add a helper method to enable/disable bluetooth (#737)

lib/tools/adb-commands.js

@@ -867,6 +867,20 @@ methods.setAirplaneMode = async function setAirplaneMode (on) {
   await this.shell(['cmd', 'connectivity', 'airplane-mode', on ? 'enable' : 'disable']);
 };
 
+/**
+ * Change the state of the bluetooth service on the device under test.
+ *
+ * @this {import('../adb.js').ADB}
+ * @param {boolean} on - True to enable bluetooth service and false to disable it.
+ */
+methods.setBluetoothOn = async function setBluetoothOn (on) {
+  if (await this.getApiLevel() < 30) {
+    throw new Error('Changing of the bluetooth state is not supported on your device');
+  }
+
+  await this.shell(['cmd', 'bluetooth_manager', on ? 'enable' : 'disable']);
+};
+
 /**
  * Broadcast the state of Airplane mode on the device under test.
  * This method should be called after {@link #setAirplaneMode}, otherwise