Implemented Wallpaper Selector and Matugen's Wallpaper based auto-theming. (#73)

* Implement matugen - WIP

* Added matugen

* Add types and cleanup code

* Matugen implementation updates and added more options such as scheme and contrast.

* Code cleanup and matugen settings renamed for clarity.

* Makon maroon a primary matugen color.

* Updates to handle variations of matugen colors

* Finalizing matugen and wrapping up variations.

* Minor styling updates of the settings dialog.

* Do a swww dependency check.

* Dependency logic update

* Switch shouldn't double trigger notifications now when checking dependency.

* Logic was inverted

* Add matugen to dependency checker.

* Fixed dependency checking conditional

* Update dependency list in readme and check for matugen before doing matugen operations

* Styling fixes

* OSD Fix

* Remove unused code from wallpaper service.

* Color fixes for matugen.

* Nix updates for new dependencies

* Change default wallpaper to empty.

* Added custom notification service for startup, cleaned up code and updated readme.

scss/options_trackers.ts

@@ -0,0 +1,46 @@
+import icons from "lib/icons";
+import { Notify, isAnImage } from "lib/utils";
+import options from "options";
+import Wallpaper from "services/Wallpaper";
+
+const { matugen } = options.theme;
+const { mode, scheme_type, contrast } = options.theme.matugen_settings;
+
+const ensureMatugenWallpaper = (): void => {
+    const wallpaperPath = options.wallpaper.image.value;
+
+    if (matugen.value && (!options.wallpaper.image.value.length || !isAnImage(wallpaperPath))) {
+        Notify({
+            summary: "Matugen Failed",
+            body: "Please select a wallpaper in 'Theming > General' first.",
+            iconName: icons.ui.warning,
+            timeout: 7000
+        })
+        matugen.value = false;
+    }
+}
+
+export const initializeTrackers = (resetCssFunc: Function) => {
+    matugen.connect("changed", () => {
+        ensureMatugenWallpaper();
+        options.resetTheme();
+    })
+
+    mode.connect("changed", () => {
+        options.resetTheme();
+    })
+    scheme_type.connect("changed", () => {
+        options.resetTheme();
+    })
+    contrast.connect("changed", () => {
+        options.resetTheme();
+    })
+
+    Wallpaper.connect("changed", () => {
+        if (options.theme.matugen.value) {
+            options.resetTheme();
+            resetCssFunc();
+        }
+    })
+
+}