feat(mango): first-class MangoWM support across DMS, dankinstaller & UI tools

- Bring up Mango to parity with niri/hyprland via a native JSON-IPC w/Native MangoServic., replaces the legacy dwl/`mmsg` path and recent breaking changes
- Dankinstall: mango supported installer, config/binds templates, and packaging (Arch AUR, Fedora Terra auto-enable, Gentoo GURU)
- Window rules: Go provider + CLI + Settings GUI editor
- Keybinds + config reload on edit (mmsg dispatch reload_config)
- Misc new supported options in DMS settings

quickshell/Modules/DankBar/Widgets/KeyboardLayoutName.qml

@@ -114,6 +114,8 @@ BasePill {
             return NiriService.getCurrentKeyboardLayoutName();
         } else if (CompositorService.isDwl) {
             return DwlService.currentKeyboardLayout;
+        } else if (CompositorService.isMango) {
+            return MangoService.currentKeyboardLayout;
         }
         return "";
     }
@@ -208,7 +210,9 @@ BasePill {
             } else if (CompositorService.isHyprland) {
                 Quickshell.execDetached(["hyprctl", "switchxkblayout", root.hyprlandKeyboard, "next"]);
             } else if (CompositorService.isDwl) {
-                Quickshell.execDetached(["mmsg", "-d", "switch_keyboard_layout"]);
+                Quickshell.execDetached(["mmsg", "dispatch", "switch_keyboard_layout"]);
+            } else if (CompositorService.isMango) {
+                MangoService.cycleKeyboardLayout();
             }
         }
     }