Add styleSwitcher.

src/App.js

src/App.scss

src/App.vue

src/components/style_switcher/style_switcher.js

src/components/style_switcher/style_switcher.vue

src/main.js

static/css/base16-3024.css

static/css/base16-apathy.css

static/css/base16-ashes.css

static/css/base16-atelier-cave.css

static/css/base16-atelier-dune.css

static/css/base16-atelier-estuary.css

static/css/base16-atelier-forest.css

static/css/base16-atelier-heath.css

static/css/base16-atelier-lakeside.css

static/css/base16-atelier-plateau.css

static/css/base16-atelier-savanna.css

static/css/base16-atelier-seaside.css

static/css/base16-atelier-sulphurpool.css

static/css/base16-bespin.css