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/sidebarLeft/DescriptionBox.qml

@@ -0,0 +1,62 @@
+import qs
+import qs.services
+import qs.modules.common
+import qs.modules.common.widgets
+import QtQuick
+import QtQuick.Layouts
+
+Item { // Tag suggestion description
+    id: root
+    property alias text: tagDescriptionText.text
+    property bool showArrows: true
+    property bool showTab: true
+
+    visible: tagDescriptionText.text.length > 0
+    Layout.fillWidth: true
+    implicitHeight: tagDescriptionBackground.implicitHeight
+
+    Rectangle {
+        id: tagDescriptionBackground
+        color: Appearance.colors.colLayer2
+        anchors.fill: parent
+        radius: Appearance.rounding.verysmall
+        implicitHeight: descriptionRow.implicitHeight + 5 * 2
+
+        RowLayout {
+            id: descriptionRow
+            spacing: 4
+            anchors {
+                fill: parent
+                leftMargin: 10
+                rightMargin: 10
+            }
+
+            StyledText {
+                id: tagDescriptionText
+                Layout.fillWidth: true
+                font.pixelSize: Appearance.font.pixelSize.smaller
+                color: Appearance.colors.colOnLayer2
+                wrapMode: Text.Wrap
+            }
+            KeyboardKey {
+                visible: root.showArrows
+                key: "↑"
+            }
+            KeyboardKey {
+                visible: root.showArrows
+                key: "↓"
+            }
+            StyledText {
+                visible: root.showArrows && root.showTab
+                text: Translation.tr("or")
+                font.pixelSize: Appearance.font.pixelSize.smaller
+            }
+            KeyboardKey {
+                id: tagDescriptionKey
+                visible: root.showTab
+                key: "Tab"
+                Layout.alignment: Qt.AlignVCenter
+            }
+        }
+    }
+}