feat: auto load directives

[jacekkarczmarczyk]

Automatcally loads directive if detected in the template

<template>
  <v-app>
    <v-toolbar v-scroll some-attr v-invalid />
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>

Output:

/* vuetify-loader */
import installComponents from "!C:/cygwin64/home/Jacek/jacekkarczmarczyk/loader-test/node_modules/vuetify-loader/lib/runtime/installComponents.js"
import { VApp } from 'vuetify/lib'
import { VToolbar } from 'vuetify/lib'
installComponents(component, {VApp,VToolbar})


/* vuetify-loader */
import installDirectives from "!C:/cygwin64/home/Jacek/jacekkarczmarczyk/loader-test/node_modules/vuetify-loader/lib/runtime/installDirectives.js"
import { Scroll } from 'vuetify/lib/directives'
installDirectives(component, {Scroll})

TODO

• readme.md
• refactor names (match and attrsMatch, and some other stuff, might be breaking, probably not worth atm)

[cnwangjie]

When the version containing this PR could be released?