feat: make SQL selectable as a language with syntax highlighting

package.json

@@ -13,6 +13,7 @@
     "@codemirror/autocomplete": "^6.20.2",
     "@codemirror/lang-cpp": "^6.0.3",
     "@codemirror/lang-python": "^6.2.1",
+    "@codemirror/lang-sql": "^6.10.0",
     "@vueuse/core": "^14.3.0",
     "axios": "^1.16.0",
     "client-zip": "2.5.0",