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/Modals/Settings/SettingsSidebar.qml

@@ -311,7 +311,7 @@ Rectangle {
                     "text": I18n.tr("Window Rules"),
                     "icon": "select_window",
                     "tabIndex": 28,
-                    "hyprlandNiriOnly": true
+                    "windowRulesCapable": true
                 }
             ]
         },
@@ -370,6 +370,8 @@ Rectangle {
             return false;
         if (item.hyprlandNiriOnly && !CompositorService.isNiri && !CompositorService.isHyprland)
             return false;
+        if (item.windowRulesCapable && !CompositorService.isNiri && !CompositorService.isHyprland && !CompositorService.isMango)
+            return false;
         if (item.niriOnly && !CompositorService.isNiri)
             return false;
         if (item.clipboardOnly && (!DMSService.isConnected || DMSService.apiVersion < 23))