Make flake self-contained - consolidate installer-replication

BREAKING CHANGE: Remove external dots-hyprland dependency

- Imported all essential configs from dots-hyprland/installer-replication
- Added complete configs/ directory with:
  - hypr/ - Hyprland configuration
  - quickshell/ - Quickshell widgets and config
  - applications/ - Application configurations
  - scripts/ - Utility scripts
  - matugen/ - Material You theming
- Updated flake.nix to use local ./configs instead of external repo
- Simplified update-flake script (removed external repo management)
- Updated README to reflect self-contained architecture
- All builds pass with local configurations

Benefits:
- No external repository dependencies
- Faster builds (no network dependencies)
- Version controlled configs in single repo
- Easier maintenance and development
- Complete installer replication in one place

configs/quickshell/modules/sidebarRight/quickToggles/NightLight.qml

@@ -0,0 +1,28 @@
+import QtQuick
+import qs.modules.common
+import qs.modules.common.widgets
+import qs
+import qs.services
+import Quickshell.Io
+
+QuickToggleButton {
+    id: nightLightButton
+    property bool enabled: Hyprsunset.active
+    toggled: enabled
+    buttonIcon: Config.options.light.night.automatic ? "night_sight_auto" : "bedtime"
+    onClicked: {
+        Hyprsunset.toggle()
+    }
+
+    altAction: () => {
+        Config.options.light.night.automatic = !Config.options.light.night.automatic
+    }
+
+    Component.onCompleted: {
+        Hyprsunset.fetchState()
+    }
+    
+    StyledToolTip {
+        content: Translation.tr("Night Light | Right-click to toggle Auto mode")
+    }
+}