✨ feat: play system bell on volume change

it can be disabled within the colorshell's configuration file, under the `misc` section: misc:play_bell_on_volume_change: (true|false)

ags/scripts/config.ts

@@ -28,7 +28,7 @@ export type ConfigEntries = Partial<{
     }>;
 
     clock: Partial<{
-        /** use the same formats as gnu's `date` command */
+        /** use the same format as gnu's `date` command */
         date_format: string;
     }>;
 
@@ -42,6 +42,10 @@ export type ConfigEntries = Partial<{
         /** whether to save night light values to disk */
         save_on_shutdown: boolean;
     }>;
+
+    misc: Partial<{
+        play_bell_on_volume_change: boolean;
+    }>;
 }>;
 
 type ValueTypes = "string" | "boolean" | "object" | "number" | "undefined" | "any";
@@ -79,6 +83,10 @@ class Config extends GObject.Object {
 
         clock: {
             date_format: "%A %d, %H:%M"
+        },
+
+        misc: {
+            play_bell_on_volume_change: true
         }
     };