feat(interface): hide splitter, shrink margins

src/gui/UtilWidgets/Splitter.cpp

@@ -0,0 +1,7 @@
+#include <gui/UtilWidgets/Splitter.h>
+
+Splitter::Splitter(QWidget *parent)
+: QSplitter(parent)
+{
+    setHandleWidth(0);
+}

src/gui/UtilWidgets/Splitter.h

@@ -0,0 +1,9 @@
+#pragma once
+#include <QSplitter>
+
+class Splitter
+: public QSplitter
+{
+public:
+    Splitter(QWidget *parent = nullptr);
+};