升级依赖，集成aj-captcha-go方便二开

server/util/aj-captcha-go/service/captcha_interface.go

@@ -0,0 +1,13 @@
+package service
+
+type CaptchaInterface interface {
+
+	// Get 获取验证码
+	Get() (map[string]interface{}, error)
+
+	// Check 核对验证码
+	Check(token string, pointJson string) error
+
+	// Verification 二次校验验证码(后端)
+	Verification(token string, pointJson string) error
+}