Add generic StyleTag component

partials/StyleTag.vue

+<template lang="pug">
+  span
+</template>
+
+<script>
+  export default {
+    props: {
+      styles: Array
+    },
+    data () {
+      return {
+        style: undefined
+      }
+    },
+    created () {
+      const styles = this.styles || this.$slots.default
+      if (Array.isArray(styles)) {
+        this.style = styles.reduce((style, val) => style + (val.text || val), '')
+      }
+    },
+    mounted: function () {
+      const style = document.createElement('style')
+      style.append(document.createTextNode(this.style))
+      this.$el.replaceWith(style)
+    }
+  }
+</script>