Mute button progress so far. WIP, doesn't entirely work correctly.

app/services/unmute_service.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class UnmuteService < BaseService
+  def call(account, target_account)
+    return unless account.muting?(target_account)
+
+    account.unmute!(target_account)
+  end
+end