Added strict type checking to the project. (#236)

* Implement strict typing (WIP).

* changes

* Finish type checks

* Fix notification icon, matugen settings and update tsconfig.

* OSD Styling updates and added the ability to configure OSD duration.

globals/window.ts

@@ -0,0 +1,10 @@
+export const WINDOW_LAYOUTS: string[] = [
+    'center',
+    'top',
+    'top-right',
+    'top-center',
+    'top-left',
+    'bottom-left',
+    'bottom-center',
+    'bottom-right'
+];