Optimize register api. Add verify Turnstile captcha to login api.

pom.xml

@@ -121,6 +121,11 @@
             <artifactId>spring-security-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.github.lianjiatech</groupId>
+            <artifactId>retrofit-spring-boot-starter</artifactId>
+            <version>3.0.3</version>
+        </dependency>
 
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>