Added on-screen-displays to indicate volume and brightness changes. (#34)

* Resolves #13 - Added on-screen-displays to indicate volume and brightness changes.

* <3 Aylur

* Update brightness logic for osd

* Update brightness labels

* Fixed typos in the settings menu component.

* Added options to toggle OSD and change its orientation.

main.ts

@@ -6,6 +6,7 @@ import MenuWindows from "./modules/menus/main.js";
 import SettingsDialog from "widget/settings/SettingsDialog"
 import Notifications from "./modules/notifications/index.js";
 import { forMonitors } from "lib/utils"
+import OSD from "modules/osd/index"
 
 App.config({
     onConfigParsed: () => Utils.execAsync(`python3 ${App.configDir}/services/bluetooth.py`),
@@ -14,6 +15,7 @@ App.config({
         Notifications(),
         SettingsDialog(),
         ...forMonitors(Bar),
+        OSD(),
     ],
     closeWindowDelay: {
         sideright: 350,