Add bootstrap-icons, make sidebar work with bundle logic

I'm starting to get a sense how to do all of this with these new tools.
I've semi-ported the sidebar at this point.

ts/style/style.scss

@@ -60,4 +60,7 @@ i.bi svg {
 // Import all of Bootstrap (or pick specific components)
 @import "bootstrap/scss/bootstrap";
 
+// Import Bootstrap Icons
+//@import "bootstrap-icons/font/bootstrap-icons.scss";
+
 @import "./sidebar.scss";