Option to change the visibility of the media button (#226)

* add option entry and default value

* add functionality

* Update options copy

Co-authored-by: Jas Singh <jaskiratpal.singh@outlook.com>

* Remove redundant visibility property

Co-authored-by: Jas Singh <jaskiratpal.singh@outlook.com>

* changing the option takes effect immediately

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Co-authored-by: Jas Singh <jaskiratpal.singh@outlook.com>

options.ts

@@ -861,7 +861,8 @@ const options = mkOptions(OPTIONS, {
             show_artist: opt(false),
             truncation: opt(true),
             show_label: opt(true),
-            truncation_size: opt(30)
+            truncation_size: opt(30),
+            show_active_only: opt(false)
         },
         notifications: {
             show_total: opt(false),