feat(api): add controller layer and auth service stubs

- Add AdminBookController, AdminBorrowController, BookController,
  BorrowController, and DashBoardController stubs
- Implement AuthController with login endpoint
- Add AuthService interface and AuthServiceImpl stub

src/main/kotlin/com/msksbr/bookmgr/controller/AdminBookController.kt

@@ -0,0 +1,7 @@
+package com.msksbr.bookmgr.controller
+
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class AdminBookController {
+}

src/main/kotlin/com/msksbr/bookmgr/controller/AdminBorrowController.kt

@@ -0,0 +1,7 @@
+package com.msksbr.bookmgr.controller
+
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class AdminBorrowController {
+}

src/main/kotlin/com/msksbr/bookmgr/controller/AuthController.kt

@@ -0,0 +1,24 @@
+package com.msksbr.bookmgr.controller
+
+import com.msksbr.bookmgr.service.AuthService
+import jakarta.servlet.http.HttpSession
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RestController
+
+// 管理登录、登出
+@RestController
+class AuthController(
+    val authService: AuthService
+) {
+    @PostMapping("/api/auth/login")
+    fun login(username: String?, password: String?) :String? {
+        return TODO("提供返回值")
+    }
+    @PostMapping("/api/auth/logout")
+    fun logout(session: HttpSession): String? {
+        // 直接销毁session
+        session.invalidate()
+        return TODO("Need json template")
+    }
+}

src/main/kotlin/com/msksbr/bookmgr/controller/BookController.kt

@@ -0,0 +1,7 @@
+package com.msksbr.bookmgr.controller
+
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class BookController {
+}

src/main/kotlin/com/msksbr/bookmgr/controller/BorrowController.kt

@@ -0,0 +1,7 @@
+package com.msksbr.bookmgr.controller
+
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class BorrowController {
+}

src/main/kotlin/com/msksbr/bookmgr/controller/DashBoardController.kt

@@ -0,0 +1,7 @@
+package com.msksbr.bookmgr.controller
+
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class DashBoardController {
+}

src/main/kotlin/com/msksbr/bookmgr/service/AuthService.kt

@@ -0,0 +1,5 @@
+package com.msksbr.bookmgr.service
+
+interface AuthService {
+    fun login(username: String?, password: String?): String?
+}

src/main/kotlin/com/msksbr/bookmgr/service/impl/AuthServiceImpl.kt

@@ -0,0 +1,11 @@
+package com.msksbr.bookmgr.service.impl
+
+import com.msksbr.bookmgr.service.AuthService
+import org.springframework.stereotype.Service
+
+@Service
+class AuthServiceImpl: AuthService {
+    override fun login(username: String?, password: String?): String? {
+        TODO("Not yet implemented")
+    }
+}