Move code rendering to the backend & frontend improvements (#176)

Added Chroma & Goldmark

Added Mermaidjs

More languages supported

Add default values for gist links input

Added copy code from markdown blocks

vite.config.js

@@ -9,7 +9,7 @@ export default defineConfig({
         assetsDir: 'assets',
         manifest: true,
         rollupOptions: {
-            input: ['./public/main.ts', './public/editor.ts', './public/admin.ts', './public/hljs.ts']
+            input: ['./public/main.ts', './public/editor.ts', './public/admin.ts', './public/gist.ts']
         },
         assetsInlineLimit: 0,
     }