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/window/osd/modules/osdmode.ts

@@ -0,0 +1,39 @@
+import { Accessor } from "ags";
+import { construct } from "../../../modules/utils";
+import GObject, { gtype, property, register } from "ags/gobject";
+
+
+@register({ GTypeName: "OSDMode" })
+export default class OSDMode extends GObject.Object {
+    readonly #subs: Array<() => void> = [];
+
+    @property(String)
+    icon: string = "image-missing";
+
+    @property(Number)
+    value: number = 0;
+
+    @property(Number)
+    max: number = 100;
+
+    @property(gtype<string|null>(String))
+    text: string|null = null;
+
+    @property(Boolean)
+    available: boolean = true;
+
+    constructor(props: {
+        icon: string | Accessor<string>;
+        value: number | Accessor<number>;
+        max?: number | Accessor<number>;
+        text?: string | Accessor<string>;
+        available?: boolean | Accessor<boolean>;
+    }) {
+        super();
+        this.#subs = construct(this, props);
+    }
+
+    vfunc_dispose(): void {
+        this.#subs.forEach(s => s());
+    }
+}