feat: integrate Google Analytics event tracking and update CSP for script sources (#30365)

Co-authored-by: CodingOnStar <hanxujiang@dify.ai>

web/utils/gtag.ts

@@ -0,0 +1,14 @@
+/**
+ * Send Google Analytics event
+ * @param eventName - event name
+ * @param eventParams - event params
+ */
+export const sendGAEvent = (
+  eventName: string,
+  eventParams?: GtagEventParams,
+): void => {
+  if (typeof window === 'undefined' || typeof (window as any).gtag !== 'function') {
+    return
+  }
+  (window as any).gtag('event', eventName, eventParams)
+}