feat: add Bootstrap 5 assets and codebar brand CSS

Add Bootstrap 5 (minified CSS + JS bundle) and custom codebar brand
overrides. The custom CSS provides:
- btn-cb-primary (Trust Blue), btn-cb-green, btn-cb-magenta buttons
- alert-cb-info, alert-cb-success, alert-cb-error alert variants
- card-header-cb accent (magenta bottom border)
- codebar logo from codebar.io

Author: mroderick

eslint.config.js

@@ -3,6 +3,9 @@ import globals from "globals";
 import { defineConfig } from "eslint/config";
 
 export default defineConfig([
+  {
+    ignores: ["static/**"],
+  },
   {
     files: ["**/*.{js,mjs,cjs}"],
     plugins: { js },