feat(cookie): add SameSite support to SetCookie method

context.go

@@ -1160,17 +1160,22 @@ func (c *Context) SetSameSite(samesite http.SameSite) {
 }
 
 // SetCookie 设置一个 HTTP cookie
-func (c *Context) SetCookie(name, value string, maxAge int, path, domain string, secure, httpOnly bool) {
+// sameSite 参数是可选的，如果不提供则使用通过 SetSameSite 设置的值
+func (c *Context) SetCookie(name, value string, maxAge int, path, domain string, secure, httpOnly bool, sameSite ...http.SameSite) {
 	if path == "" {
 		path = "/"
 	}
+	site := c.sameSite
+	if len(sameSite) > 0 {
+		site = sameSite[0]
+	}
 	http.SetCookie(c.Writer, &http.Cookie{
 		Name:     name,
 		Value:    url.QueryEscape(value),
 		MaxAge:   maxAge,
 		Path:     path,
 		Domain:   domain,
-		SameSite: c.sameSite,
+		SameSite: site,
 		Secure:   secure,
 		HttpOnly: httpOnly,
 	})