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/bar/ClockWidget.qml

@@ -0,0 +1,41 @@
+import qs.modules.common
+import qs.modules.common.widgets
+import qs.services
+import QtQuick
+import QtQuick.Layouts
+
+Item {
+    id: root
+    property bool borderless: Config.options.bar.borderless
+    property bool showDate: Config.options.bar.verbose
+    implicitWidth: rowLayout.implicitWidth
+    implicitHeight: 32
+
+    RowLayout {
+        id: rowLayout
+        anchors.centerIn: parent
+        spacing: 4
+
+        StyledText {
+            font.pixelSize: Appearance.font.pixelSize.large
+            color: Appearance.colors.colOnLayer1
+            text: DateTime.time
+        }
+
+        StyledText {
+            visible: root.showDate
+            font.pixelSize: Appearance.font.pixelSize.small
+            color: Appearance.colors.colOnLayer1
+            text: "•"
+        }
+
+        StyledText {
+            visible: root.showDate
+            font.pixelSize: Appearance.font.pixelSize.small
+            color: Appearance.colors.colOnLayer1
+            text: DateTime.date
+        }
+
+    }
+
+}