feat: make AGS colorshell configuration fully declarative

- Add complete colorshell v2.0.3 configuration to home/ags-config/
- Disable runner plugin and NightLight tile (incompatible with NixOS)
- Customize SCSS with full opacity (no transparency)
- Add dark pale blue color scheme in home/pywal-colors/
- Configure Papirus-Dark icon theme via home-manager
- Make ~/.config/ags/ immutable and managed by Nix store
- Auto-deploy pywal colors to ~/.cache/wal/colors.json

All AGS configuration is now reproducible and version controlled.

home/ags-config/@girs/console.d.ts

@@ -0,0 +1,23 @@
+declare module 'console' {
+    /**
+     * @param logDomain the GLib log domain this Console should print
+     *   with. Defaults to 'Gjs-Console'.
+     */
+    export function setConsoleLogDomain(logDomain: string): void;
+
+    /**
+     * @param logDomain the GLib log domain this Console should print
+     *   with. Defaults to 'Gjs-Console'.
+     */
+    export function getConsoleLogDomain(): string;
+
+    export const DEFAULT_LOG_DOMAIN: string;
+
+    const Console: {
+        setConsoleLogDomain: typeof setConsoleLogDomain;
+        getConsoleLogDomain: typeof getConsoleLogDomain;
+        DEFAULT_LOG_DOMAIN: typeof DEFAULT_LOG_DOMAIN;
+    };
+
+    export default Console;
+}