feat(snap): add audio playback (#2189)

stores/snapcraft/insider/snap/snapcraft.yaml

@@ -11,7 +11,8 @@ compression: lzo
 
 parts:
   codium-insiders:
-    plugin: nil
+    plugin:
+      - audio-playback
     override-build: |
       set -eu
       # Get .deb url

stores/snapcraft/stable/snap/snapcraft.yaml

@@ -11,7 +11,8 @@ compression: lzo
 
 parts:
   codium:
-    plugin: nil
+    plugin:
+      - audio-playback
     override-build: |
       set -eu
       # Get .deb url