feat(fcm): 푸시 알림함 저장 및 카테고리 조회를 지원한다

src/main/kotlin/kr/co/vividnext/sodalive/fcm/FcmController.kt

@@ -1,5 +1,6 @@
 package kr.co.vividnext.sodalive.fcm
 
+import kr.co.vividnext.sodalive.fcm.notification.PushNotificationCategory
 import org.springframework.context.ApplicationEventPublisher
 import org.springframework.security.access.prepost.PreAuthorize
 import org.springframework.transaction.annotation.Transactional
@@ -21,6 +22,7 @@ class FcmController(private val applicationEventPublisher: ApplicationEventPubli
             applicationEventPublisher.publishEvent(
                 FcmEvent(
                     type = FcmEventType.INDIVIDUAL,
+                    category = PushNotificationCategory.SYSTEM,
                     title = request.title,
                     isAuth = request.isAuth,
                     message = request.message,
@@ -31,6 +33,7 @@ class FcmController(private val applicationEventPublisher: ApplicationEventPubli
             applicationEventPublisher.publishEvent(
                 FcmEvent(
                     type = FcmEventType.ALL,
+                    category = PushNotificationCategory.SYSTEM,
                     title = request.title,
                     message = request.message,
                     isAuth = request.isAuth