add latex support

package.json

@@ -21,6 +21,7 @@
     "@codemirror/lang-python": "^6.2.1",
     "axios": "^1.12.2",
     "codemirror": "^6.0.2",
+    "markdown-it-mathjax3": "^4.3.2",
     "vue-codemirror6": "~1.3.22"
   }
 }