Add the context menu options to split the view left-right and top-bottom

FEATURE: 415724

desktop/sessionui.rc

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE gui SYSTEM "kpartgui.dtd">
 
-<gui name="session" version="32">
+<gui name="session" version="33">
     <MenuBar>
         <Menu name="file">
             <Action name="file_save_as" group="session-operations"/>
@@ -57,6 +57,11 @@
         <Action name="web-search"/>
         <Action name="open-browser"/>
         <Separator/>
+        <Menu name="view-split"><text>Split View</text>
+            <Action name="split-view-left-right"/>
+            <Action name="split-view-top-bottom"/>
+        </Menu>
+        <Separator/>
         <Action name="set-encoding"/>
         <Action name="clear-history"/>
         <Action name="adjust-history"/>

src/ViewManager.cpp

@@ -820,6 +820,8 @@ SessionController *ViewManager::createController(Session *session, TerminalDispl
     connect(session, &Konsole::Session::selectionChanged, controller, &Konsole::SessionController::selectionChanged);
     connect(view, &Konsole::TerminalDisplay::destroyed, controller, &Konsole::SessionController::deleteLater);
     connect(controller, &Konsole::SessionController::viewDragAndDropped, this, &Konsole::ViewManager::forgetController);
+    connect(controller, &Konsole::SessionController::requestSplitViewLeftRight, this, &Konsole::ViewManager::splitLeftRight);
+    connect(controller, &Konsole::SessionController::requestSplitViewTopBotton, this, &Konsole::ViewManager::splitTopBottom);
 
     // if this is the first controller created then set it as the active controller
     if (_pluggedController.isNull()) {

src/session/SessionController.cpp

@@ -672,6 +672,14 @@ void SessionController::setupCommonActions()
     action->setVisible(false);
     connect(action, &QAction::triggered, this, &SessionController::copy);
 
+    action = collection->addAction(QStringLiteral("split-view-left-right"));
+    action->setText(i18n("Split View Left-Right"));
+    connect(action, &QAction::triggered, this, &SessionController::requestSplitViewLeftRight);
+
+    action = collection->addAction(QStringLiteral("split-view-top-bottom"));
+    action->setText(i18n("Split View Top-Bottom"));
+    connect(action, &QAction::triggered, this, &SessionController::requestSplitViewTopBotton);
+
     action = collection->addAction(QStringLiteral("edit_copy_contextmenu_in_out"));
     action->setText(i18n("Copy except prompts"));
     action->setIcon(QIcon::fromTheme(QStringLiteral("edit-copy")));

src/session/SessionController.h

@@ -157,6 +157,13 @@ Q_SIGNALS:
 
     void rawTitleChanged();
 
+    /*
+     * Emitted when the user requests to split the view from the context menu.
+     */
+
+    void requestSplitViewLeftRight();
+    void requestSplitViewTopBotton();
+
     /**
      * Emitted when the current working directory of the session associated with
      * the controller is changed.