Set initial database schema

backend/src/main/resources/application.properties

@@ -1 +1,11 @@
 spring.application.name=backend
+spring.h2.console.enabled=true
+spring.h2.console.path=/h2-console
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.hibernate.ddl-auto=update
+logging.level.org.springframework=INFO
+logging.level.com.example=DEBUG
+server.port=8080