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/matugen/templates/wlogout/layout

@@ -0,0 +1,36 @@
+{
+    "label" : "lock",
+    "action" : "hyprlock",
+    "text" : "Lock",
+    "keybind" : "l"
+}
+{
+    "label" : "hibernate",
+    "action" : "systemctl hibernate",
+    "text" : "Hibernate",
+    "keybind" : "h"
+}
+{
+    "label" : "logout",
+    "action" : "hyprctl dispatch exit",
+    "text" : "Logout",
+    "keybind" : "e"
+}
+{
+    "label" : "shutdown",
+    "action" : "systemctl poweroff",
+    "text" : "Shutdown",
+    "keybind" : "s"
+}
+{
+    "label" : "suspend",
+    "action" : "systemctl suspend",
+    "text" : "Suspend",
+    "keybind" : "u"
+}
+{
+    "label" : "reboot",
+    "action" : "systemctl reboot",
+    "text" : "Reboot",
+    "keybind" : "r"
+}