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/control-center/widgets/pages/NightLight.tsx

@@ -0,0 +1,44 @@
+import { Page } from "../Page";
+import { NightLight } from "../../../../modules/nightlight";
+import { tr } from "../../../../i18n/intl";
+import { Astal, Gtk } from "ags/gtk4";
+import { addSliderMarksFromMinMax } from "../../../../modules/utils";
+import { createBinding } from "ags";
+
+
+export const PageNightLight = <Page
+    id={"night-light"}
+    title={tr("control_center.pages.night_light.title")}
+    description={tr("control_center.pages.night_light.description")}
+    content={() => [
+        <Gtk.Label class={"sub-header"} label={tr(
+            "control_center.pages.night_light.temperature"
+        )} xalign={0} />,
+        <Astal.Slider class={"temperature"} $={(self) => {
+              self.value = NightLight.getDefault().temperature;
+              addSliderMarksFromMinMax(self, 5, "{}K");
+          }} value={createBinding(NightLight.getDefault(), "temperature")}
+          tooltipText={createBinding(NightLight.getDefault(), "temperature").as(temp => 
+              `${temp}K`)} min={NightLight.getDefault().minTemperature} 
+          max={NightLight.getDefault().maxTemperature} 
+          onChangeValue={(_, type, value) => {
+              if(type != undefined && type !== null)
+                  NightLight.getDefault().temperature = Math.floor(value)
+          }}
+        />,
+        <Gtk.Label class={"sub-header"} label={tr(
+            "control_center.pages.night_light.gamma"
+        )} xalign={0} />,
+        <Astal.Slider class={"gamma"} $={(self) => {
+              self.value = NightLight.getDefault().gamma;
+              addSliderMarksFromMinMax(self, 5, "{}%");
+          }} value={createBinding(NightLight.getDefault(), "gamma")}
+          tooltipText={createBinding(NightLight.getDefault(), "gamma").as(gamma => 
+              `${gamma}%`)} max={NightLight.getDefault().maxGamma} 
+          onChangeValue={(_, type, value) => {
+              if(type != undefined && type !== null)
+                  NightLight.getDefault().gamma = Math.floor(value)
+          }}
+        />
+    ]}
+/> as Page;