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/common/widgets/MenuButton.qml

@@ -0,0 +1,26 @@
+import qs.modules.common
+import QtQuick
+
+RippleButton {
+    id: root
+
+    buttonRadius: 0
+    implicitHeight: 36
+    implicitWidth: buttonTextWidget.implicitWidth + 14 * 2
+
+    contentItem: StyledText {
+        id: buttonTextWidget
+        anchors.fill: parent
+        anchors.leftMargin: 14
+        anchors.rightMargin: 14
+        text: root.buttonText
+        horizontalAlignment: Text.AlignLeft
+        font.pixelSize: Appearance.font.pixelSize.small
+        color: root.enabled ? Appearance.m3colors.m3onSurface : Appearance.m3colors.m3outline
+
+        Behavior on color {
+            animation: Appearance.animation.elementMoveFast.colorAnimation.createObject(this)
+        }
+    }
+
+}