feat: Swagger 설정 추가

- https 주소를 추가함

src/main/java/com/project/trainingdiary/config/SwaggerConfig.java

@@ -0,0 +1,26 @@
+package com.project.trainingdiary.config;
+
+import io.swagger.v3.oas.annotations.OpenAPIDefinition;
+import io.swagger.v3.oas.annotations.info.Info;
+import io.swagger.v3.oas.annotations.servers.Server;
+
+@OpenAPIDefinition(
+    info = @Info(
+        title = "트레이닝 다이어리",
+        version = "1.0",
+        description = "트레이너의 일정을 예약하고, 운동을 기록합니다."
+    ),
+    servers = {
+        @Server(
+            url = "http://localhost:8080",
+            description = "Local Server"
+        ),
+        @Server(
+            url = "https://trainingdiaryapi.marcel-dev.com",
+            description = "Stage Server"
+        )
+    }
+)
+public class SwaggerConfig {
+
+}