abstract dbm and light composable and components and upgrade light user gui for fine graining with + and -

src/composables/dbm/useContextMenu.ts

@@ -0,0 +1,12 @@
+import { ref } from 'vue';
+import type { TreeNode } from './dbmTree';
+
+export const contextMenuRef = ref();
+
+export const contextMenuState = ref<TreeNode | undefined>();
+
+export function openContextMenu(event: MouseEvent, node: undefined) {
+  event.preventDefault();
+  contextMenuState.value = node;
+  contextMenuRef.value?.show(event);
+}