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/calendar/CalendarHeaderButton.qml

@@ -0,0 +1,36 @@
+import qs.modules.common
+import qs.modules.common.widgets
+import QtQuick
+
+RippleButton {
+    id: button
+    property string buttonText: ""
+    property string tooltipText: ""
+    property bool forceCircle: false
+
+    implicitHeight: 30
+    implicitWidth: forceCircle ? implicitHeight : (contentItem.implicitWidth + 10 * 2)
+    Behavior on implicitWidth {
+        SmoothedAnimation {
+            velocity: Appearance.animation.elementMove.velocity
+        }
+    }
+
+    background.anchors.fill: button
+    buttonRadius: Appearance.rounding.full
+    colBackground: Appearance.colors.colLayer2
+    colBackgroundHover: Appearance.colors.colLayer2Hover
+    colRipple: Appearance.colors.colLayer2Active
+
+    contentItem: StyledText {
+        text: buttonText
+        horizontalAlignment: Text.AlignHCenter
+        font.pixelSize: Appearance.font.pixelSize.larger
+        color: Appearance.colors.colOnLayer1
+    }
+
+    StyledToolTip {
+        content: tooltipText
+        extraVisibleCondition: tooltipText.length > 0
+    }
+}