Introduce Mermaid dependency and URL helpers

Author: harley

package.json

@@ -24,7 +24,8 @@
   },
   "dependencies": {
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "mermaid": "^10.9.1"
   },
   "devDependencies": {
     "@crxjs/vite-plugin": "^2.0.0-beta.26",
@@ -38,4 +39,4 @@
     "typescript": "^5.2.2",
     "vite": "^5.4.10"
   }
-}
+}