updating icons to match style guide. update preview

src/FocusVolumeControl/AudioSessions/ActiveAudioSessionWrapper.cs

@@ -26,7 +26,7 @@ public class ActiveAudioSessionWrapper : IAudioSession
 			}
 			catch
 			{
-				_icon = "Image/pluginIcon.png";
+				_icon = "Image/encoderIcon";
 			}
 		}
 		return _icon;

src/FocusVolumeControl/AudioSessions/SystemVolumeAudioSession.cs

@@ -13,7 +13,7 @@ internal class SystemVolumeAudioSession : IAudioSession
 	AudioEndpointVolume _volumeControl;
 
 	public string DisplayName => "System Volume";
-	public string GetIcon() => "Images/actionIcon";
+	public string GetIcon() => "Images/encoderIcon";
 
 	public void ToggleMute()
 	{

src/FocusVolumeControl/FocusVolumeControl.csproj

@@ -77,7 +77,7 @@
     </None>
   </ItemGroup>
   <ItemGroup>
-    <Content Include="$(SolutionDir)..\previews\**\*" Link="previews\%(Filename)%(Extension)">
+    <Content Include="$(SolutionDir)..\previews\**\*.png" Link="previews\%(Filename)%(Extension)">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
     <Content Include="Images\**\*.png">

src/FocusVolumeControl/manifest.json

@@ -2,10 +2,10 @@
   "Actions": [
     {
       "Name": "Focused App Volume",
-      "Icon": "Images/icon",
+      "Icon": "Images/actionIcon",
       "States": [
         {
-          "Image": "Images/pluginAction",
+          "Image": "Images/stateIcon",
           "TitleAlignment": "middle",
           "FontSize": "12"
         }