feat: display episode and artist on index

vue-theme/src/pages/index.vue

     article.f-grow.shadow.b-radius
         header
             h1 {{ site }}: index
+        section(v-if="allEpisodesLoaded")
+            h4 Episodes
+            p {{ Object.values(allEpisodes).length }}
+        section(v-if="allArtistsLoaded")
+            h4 artists
+            p {{ Object.values(allArtists).length }}
         section(v-if="allPagesLoaded")
             h4 pages
             p {{ Object.values(allPages).length }}
             allPostsLoaded: 'allPostsLoaded',
             allPosts: 'allPosts',
             allPagesLoaded: 'allPagesLoaded',
+            allArtists: 'allArtists',
+            allArtistsLoaded: 'allArtistsLoaded',
+            allEpisodes: 'allEpisodes',
+            allEpisodesLoaded: 'allEpisodesLoaded',
         }),
     },
     data() {
 
         this.$store.dispatch('getAllPages')
         this.$store.dispatch('getAllPosts')
+
+        this.$store.dispatch('getAllArtists')
+        this.$store.dispatch('getAllEpisodes')
     }
 }
 </script>

vue-theme/src/store/index.js

 
 import page from './modules/page'
 import post from './modules/post'
+import artist from './modules/artist'
+import episode from './modules/episode'
 
 Vue.use(Vuex)
 
   modules: {
       post,
       page,
+      artist,
+      episode
   },
   strict: debug,
 })