feat: 初始化

src/main/java/com/webgame/webgamebackend/service/AccountService.java

@@ -0,0 +1,9 @@
+package com.webgame.webgamebackend.service;
+
+public interface AccountService {
+    /**
+     * 登录
+     * @return token
+     */
+    public String login();
+}

src/main/java/com/webgame/webgamebackend/service/impl/AccountServiceImpl.java

@@ -0,0 +1,14 @@
+package com.webgame.webgamebackend.service.impl;
+
+import com.webgame.webgamebackend.service.AccountService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class AccountServiceImpl implements AccountService {
+    @Override
+    public String login() {
+        return "login";
+    }
+}