:sparkles: repacking by subtype for artist module

vue-theme/src/store/modules/artist.js

     return flatPacked
 }
 
+const _arrangeByType = artistsList => {
+    const byType = {}
+    artistsList.forEach(artist => {
+        const subtypes = artist.subtypes
+        subtypes.forEach(type => {
+            if(!byType[type]) byType[type] = []
+            byType[type].push(artist)
+        })
+    })
+    const flatPacked = []
+    Object.keys(byType).forEach(type => {
+        flatPacked.push({ slug: type, title: type, inbetween: true })
+        byType[type].forEach(artist => flatPacked.push(artist))
+    })
+    console.log('flatPacked :', flatPacked)
+    return flatPacked
+}
+
 const _arrangeByAlpha = artistsList => {
     const alphabet = [...'9abcdefghijklmnopqrstuvwxyz']
     const flatPacked = []
         flatPacked.push({ slug: episode, title: episode, inbetween: true })
         byEpisode[episode].forEach(artist => flatPacked.push(artist))
     })
-    console.log('flatPacked :', flatPacked)
     return flatPacked
 }
 
                 repacked = _arrangeByMaterial(artists)
             } else if(sortType == sortTypes.episode) {
                 repacked = _arrangeByEpisode(artists)
+            } else if(sortType == sortTypes.subtype) {
+                repacked = _arrangeByType(artists)
             }
             commit('STORE_FETCHED_ARTISTS', { artists: repacked })
             commit('ARTISTS_LOADED', true)