responsiveness improvements

+ extract track context menu handler into a composable

src/composables/context.ts

@@ -0,0 +1,28 @@
+import { Ref } from "vue";
+
+import useModalStore from "@/stores/modal";
+import useQueueStore from "@/stores/queue";
+import useContextStore from "@/stores/context";
+
+import { ContextSrc } from "./enums";
+import { Track } from "@/interfaces";
+import trackContext from "@/contexts/track_context";
+
+export const showTrackContextMenu = (
+  e: Event,
+  track: Track,
+  flag: Ref<boolean>
+) => {
+  const menu = useContextStore();
+
+  const options = trackContext(track, useModalStore, useQueueStore);
+
+  menu.showContextMenu(e, options, ContextSrc.Track);
+  flag.value = true;
+
+  menu.$subscribe((mutation, state) => {
+    if (!state.visible) {
+      flag.value = false;
+    }
+  });
+};