feat: DMS Core Chroma Syntax Highlighter

- Thanks alecthomas for the project

quickshell/Modules/Notepad/Notepad.qml

@@ -23,6 +23,7 @@ Item {
     property string pendingSaveContent: ""
 
     signal hideRequested
+    signal previewRequested(string content)
 
     Ref {
         service: NotepadStorageService
@@ -198,6 +199,10 @@ Item {
                 createNewTab();
             }
 
+            onPreviewRequested: {
+                textEditor.togglePreview()
+            }
+
             onEscapePressed: {
                 root.hideRequested();
             }