Create and use proxy server middleware

Because
- Get over of CORS and mixed content browser errors

nuxt.config.js

@@ -27,6 +27,9 @@ export default {
   server: {
     host: '0.0.0.0', // default: localhost
   },
+  serverMiddleware: [
+    '~/proxy/index.js'
+  ],
   head: {
     title: `${meta.name} \u2022 ${meta.shortDescription}`,
     meta: [