Remove global service declarations and change to declarations upon usage. (#761)

* Remove global service declarations and change to declarations upon usage.

* Only load cava service if cava is enabled.

src/components/menus/audio/active/devices/index.tsx

@@ -1,6 +1,9 @@
-import { audioService } from 'src/lib/constants/services';
 import { SliderItem } from '../sliderItem/SliderItem';
 import { ActiveDeviceMenu } from '..';
+import AstalWp from 'gi://AstalWp?version=0.1';
+
+const wireplumber = AstalWp.get_default() as AstalWp.Wp;
+const audioService = wireplumber.audio;
 
 const ActiveDeviceContainer = ({ children }: ActiveDeviceContainerProps): JSX.Element => {
     return (