fix: Fix dbus scanning issues

BREAKING CHANGE: Make isScanning and isAdvertising sync instead of async

Author: Marco Crespi

lib/bindings/dbus/Adapter.d.ts

@@ -10,19 +10,20 @@ export declare class DbusAdapter extends Adapter {
     private scanning;
     private requestScanStop;
     private updateTimer;
+    private scanChangeListeners;
     private peripherals;
     constructor(modblue: DbusMODblue, path: string, name: string, address: string);
     private init;
     private prop;
     getScannedPeripherals(): Promise<Peripheral[]>;
-    isScanning(): Promise<boolean>;
+    isScanning(): boolean;
     startScanning(): Promise<void>;
     private onScanStart;
     stopScanning(): Promise<void>;
     private onScanStop;
     private onDeviceFound;
     private updatePeripherals;
-    isAdvertising(): Promise<boolean>;
+    isAdvertising(): boolean;
     startAdvertising(): Promise<void>;
     stopAdvertising(): Promise<void>;
     setupGatt(): Promise<GattLocal>;