패키지 구조 수정 및 추가

api-app/infrastructure-db-postgres/build.gradle

@@ -0,0 +1,8 @@
+plugins {
+    id 'java'
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    runtimeOnly 'org.postgresql:postgresql'
+}