Add label field to VimOutputPanel

src/main/java/com/maddyhome/idea/vim/ex/ExOutputModel.kt

@@ -85,6 +85,17 @@ class ExOutputModel(private val myEditor: WeakReference<Editor>) : VimOutputPane
         isActiveInTestMode = newValue.isNotEmpty()
       }
     }
+  override var label: String
+    get() {
+      val notNullEditor = editor ?: return ""
+      val panel = ExOutputPanel.getNullablePanel(notNullEditor) ?: return ""
+      return panel.myLabel.text
+    }
+    set(value) {
+      val notNullEditor = editor ?: return
+      val panel = ExOutputPanel.getNullablePanel(notNullEditor) ?: return
+      panel.myLabel.text = value
+    }
 
   fun output(text: String) {
     this.text = text

src/main/java/com/maddyhome/idea/vim/ui/ExOutputPanel.java

@@ -47,7 +47,7 @@ import static com.maddyhome.idea.vim.api.VimInjectorKt.injector;
 public class ExOutputPanel extends JPanel {
   private final @NotNull Editor myEditor;
 
-  private final @NotNull JLabel myLabel = new JLabel("more");
+  public final @NotNull JLabel myLabel = new JLabel("more");
   private final @NotNull JTextArea myText = new JTextArea();
   private final @NotNull JScrollPane myScrollPane =
     new JBScrollPane(myText, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

vim-engine/src/main/kotlin/com/maddyhome/idea/vim/api/VimOutputPanel.kt

@@ -17,6 +17,11 @@ interface VimOutputPanel {
    */
   val text: String
 
+  /**
+   * The text in the bottom of the output panel, e.g. `-- MORE --`
+   */
+  var label: String
+
   /**
    * Appends the specified text to the existing content of the output panel.
    * If 'isNewLine' is true, the text will begin on a new line.