move global search input to a general location

- create a global search store
- create a half-baked context menu store
-

src/components/shared/SongItem.vue

@@ -7,7 +7,7 @@
     <td class="index">{{ index }}</td>
     <td class="flex">
       <div
-        class="album-art image"
+        class="album-art image rounded"
         :style="{ backgroundImage: `url(&quot;${song.image}&quot;` }"
         @click="emitUpdate(song)"
       >

src/components/shared/TrackItem.vue

@@ -7,7 +7,7 @@
     }"
   >
     <div
-      class="album-art image"
+      class="album-art image rounded"
       :style="{
         backgroundImage: `url(&quot;${props.track.image}&quot;)`,
       }"