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/useTheme.ts

@@ -3,6 +3,8 @@ import { bash, Notify } from "lib/utils";
 import icons from "lib/icons"
 import { filterConfigForThemeOnly, loadJsonFile, saveConfigToFile } from "widget/settings/shared/FileChooser";
 
+export const hexColorPattern = /^#([0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$/;
+
 globalThis.useTheme = (filePath: string): void => {
     let importedConfig = loadJsonFile(filePath);