feat(audio-switcher): migrate to widget.actions and fix mute status logic (#200)

* refactor(audio-switcher): remove unused translation key

* feat(audio-switcher)!: migrate scroll handling to widget actions

* feat(audio-switcher): migrate click handling to widget actions

* refactor(audio-switcher): migrate to openSettings

* fix(audio-switcher): fix incorrect mute status check for input and output

audio-switcher/translations/en.json

@@ -95,10 +95,6 @@
     "visible_count": "Visible {count}"
   },
   "settings": {
-    "scroll_step": {
-      "description": "How many percentage points each mouse-wheel step changes volume on the bar widget.",
-      "label": "Scroll step"
-    },
     "show_actions_in_tooltip": {
       "description": "Show actions in tooltip.",
       "label": "Show actions in tooltip"
@@ -137,7 +133,6 @@
       }
     },
     "input": "Input",
-    "output": "Output",
-    "tooltip": "Output: {output} ({output_volume})\nInput: {input} ({input_volume})\nScroll: change output volume\nLeft click: open Audio Switcher\nRight click: cycle outputs\nMiddle click: cycle inputs"
+    "output": "Output"
   }
 }