feat: 添加 FingerprintJS 依赖，集成访客 ID 和指纹数据功能

src/utils/fingerprint.js

@@ -0,0 +1,22 @@
+import FingerprintJS from '@fingerprintjs/fingerprintjs'
+
+let fpPromise
+
+export const loadFingerprint = () => {
+  if (!fpPromise) {
+    fpPromise = FingerprintJS.load()
+  }
+  return fpPromise
+}
+
+export const getVisitorId = async () => {
+  const fp = await loadFingerprint()
+  const result = await fp.get()
+  return result.visitorId
+}
+
+export const getFingerprintData = async () => {
+    const fp = await loadFingerprint()
+    const result = await fp.get()
+    return result
+}