move messages to content

src/pages/settings.js

@@ -0,0 +1,22 @@
+import './settings.scss';
+import messages from '../content/messages';
+
+document.addEventListener('DOMContentLoaded', () => {
+  let form = document.getElementById('vimvixen-settings-form');
+  form.addEventListener('submit', (e) => {
+    e.preventDefault();
+    browser.storage.local.set({
+      settings: {
+        json: e.target.elements['plain-json'].value
+      }
+    }).then(() => {
+      return browser.runtime.sendMessage({
+        type: messages.SETTINGS_RELOAD
+      });
+    });
+  });
+
+  browser.storage.local.get('settings').then((value) => {
+    form.elements['plain-json'].value = value.settings.json;
+  }, console.error);
+});