Give contextual feedback for manual update check instead of banner

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/dispatcher/actions.ts

@@ -45,8 +45,13 @@ export enum Action {
     ViewTooltip = "view_tooltip",
 
     /**
-     *  Forces the theme to reload. No additional payload information required.
+     * Forces the theme to reload. No additional payload information required.
      */
     RecheckTheme = "recheck_theme",
+
+    /**
+     * Response to manual update check, will fire multiple times during the update check.
+     */
+    CheckUpdates = "check_updates",
 }