Merge pull request #4930 from BookStackApp/split_md_js

JS Build: Split markdown to own file, updated packages

Author: ssddanbrown

dev/build/esbuild.js

@@ -13,6 +13,7 @@ const entryPoints = {
     app: path.join(__dirname, '../../resources/js/app.js'),
     code: path.join(__dirname, '../../resources/js/code/index.mjs'),
     'legacy-modes': path.join(__dirname, '../../resources/js/code/legacy-modes.mjs'),
+    markdown: path.join(__dirname, '../../resources/js/markdown/index.mjs'),
 };
 
 // Locate our output directory