add vim bindings to split input movement

src/widgets/splits/SplitInput.cpp

@@ -246,6 +246,54 @@ void SplitInput::installKeyPressedEvent()
                 }
             }
         }
+        else if (event->key() == Qt::Key_H &&
+                 event->modifiers() == Qt::AltModifier)
+        {
+            // h: vim binding for left
+            SplitContainer *page = this->split_->getContainer();
+            event->accept();
+
+            if (page != nullptr)
+            {
+                page->selectNextSplit(SplitContainer::Left);
+            }
+        }
+        else if (event->key() == Qt::Key_J &&
+                 event->modifiers() == Qt::AltModifier)
+        {
+            // j: vim binding for down
+            SplitContainer *page = this->split_->getContainer();
+            event->accept();
+
+            if (page != nullptr)
+            {
+                page->selectNextSplit(SplitContainer::Below);
+            }
+        }
+        else if (event->key() == Qt::Key_K &&
+                 event->modifiers() == Qt::AltModifier)
+        {
+            // k: vim binding for up
+            SplitContainer *page = this->split_->getContainer();
+            event->accept();
+
+            if (page != nullptr)
+            {
+                page->selectNextSplit(SplitContainer::Above);
+            }
+        }
+        else if (event->key() == Qt::Key_L &&
+                 event->modifiers() == Qt::AltModifier)
+        {
+            // l: vim binding for right
+            SplitContainer *page = this->split_->getContainer();
+            event->accept();
+
+            if (page != nullptr)
+            {
+                page->selectNextSplit(SplitContainer::Right);
+            }
+        }
         else if (event->key() == Qt::Key_Down)
         {
             if ((event->modifiers() & Qt::ShiftModifier) != 0)