🛠 Add jekyll-assets for asset pipeline #100DaysOfCode R1D27

Used an old version because documentation of current version is incomplete.
I couldn't figure out how to get it to work properly.

_assets/js/application.js

@@ -0,0 +1,5 @@
+//= require vendor/jquery
+//= require popper
+//= require bootstrap
+
+console.log($);