refactor: move wlr_layershell to its own subdirectory

src/wayland/wlr_layershell/shell_integration.cpp

@@ -0,0 +1,22 @@
+#include "shell_integration.hpp"
+
+#include <private/qwaylandshellintegration_p.h>
+#include <private/qwaylandshellsurface_p.h>
+#include <private/qwaylandwindow_p.h>
+
+#include "surface.hpp"
+#include "wayland-wlr-layer-shell-unstable-v1-client-protocol.h"
+
+QSWaylandLayerShellIntegration::QSWaylandLayerShellIntegration()
+    : QtWaylandClient::QWaylandShellIntegrationTemplate<QSWaylandLayerShellIntegration>(4) {}
+
+QSWaylandLayerShellIntegration::~QSWaylandLayerShellIntegration() {
+	if (this->object() != nullptr) {
+		zwlr_layer_shell_v1_destroy(this->object());
+	}
+}
+
+QtWaylandClient::QWaylandShellSurface*
+QSWaylandLayerShellIntegration::createShellSurface(QtWaylandClient::QWaylandWindow* window) {
+	return new QSWaylandLayerSurface(this, window);
+}