Setup CI tests (#100)

* use @xarc/xrun to streamline tasks in an imperative manner

* add lint-staged/husky for git hook tasks

* run prettier across all files

* fixing tests

* add ci test workflow

* add a ci workflow

* remove precommit in favor of husky

* add .prettierrc.js

* reformat with prettier

assets/less/font-awesome/list.less

@@ -5,7 +5,9 @@
   padding-left: 0;
   margin-left: @fa-li-width;
   list-style-type: none;
-  > li { position: relative; }
+  > li {
+    position: relative;
+  }
 }
 .@{fa-css-prefix}-li {
   position: absolute;