Bundle CSS with Hugo's Sass feature (#705)

* migrate bootstrap and flags to bundle

* migrated main.css

* migrate navbar.css and plyr

* migrated mulish font and darkreader

* migrated static/css/sections stylesheets

* migrated list page and sidebar styles

* migrated search.html ( nothing to add )

* migration single page styles

* remove duplicated style tags

* migrate notes.  Deleted unused css in static

* migrate 404 css to bundle

* migrate katex styles

* migrate embedpdf styles

* migrated katex css

---------

Co-authored-by: Aaron Qian <aaron@yeet.io>

assets/scripts/features/syntaxhighlight/hljs.js

@@ -1,4 +1,12 @@
 import hljs from 'highlight.js'
 import * as params from '@params'
 
-hljs.highlightAll(params.syntaxhighlight?.hljs)
+const defaultOptions = {
+  ignoreUnescapedHTML: true
+}
+
+hljs.configure({
+    ...defaultOptions,
+    ...(params.syntaxhighlight?.hljs || {}),
+});
+hljs.highlightAll();