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/ii/modules/common/widgets/ConfigSelectionArray.qml

@@ -0,0 +1,43 @@
+import QtQuick
+import QtQuick.Layouts
+import qs.services
+import qs.modules.common
+import qs.modules.common.widgets
+import qs.modules.common.functions
+
+Flow {
+    id: root
+    Layout.fillWidth: true
+    spacing: 2
+    property list<var> options: []
+    property string configOptionName: ""
+    property var currentValue: null
+
+    signal selected(var newValue)
+
+    Repeater {
+        model: root.options
+        delegate: SelectionGroupButton {
+            id: paletteButton
+            required property var modelData
+            required property int index
+            onYChanged: {
+                if (index === 0) {
+                    paletteButton.leftmost = true
+                } else {
+                    var prev = root.children[index - 1]
+                    var thisIsOnNewLine = prev && prev.y !== paletteButton.y
+                    paletteButton.leftmost = thisIsOnNewLine
+                    prev.rightmost = thisIsOnNewLine
+                }
+            }
+            leftmost: index === 0
+            rightmost: index === root.options.length - 1
+            buttonText: modelData.displayName;
+            toggled: root.currentValue === modelData.value
+            onClicked: {
+                root.selected(modelData.value);
+            }
+        }
+    }
+}