feat(application.properties): añadida configuracion de la BBDD H2 para pruebas

src/main/resources/application.properties

 spring.application.name=AppRecetas
 spring.application.name=AppRecetas
+spring.h2.console.enabled=true
+spring.h2.console.path=/h2-console
+spring.datasource.url=jdbc:h2:mem:app_recetas
+spring.datasource.driver-class-name=org.h2.Driver
+spring.datasource.username=user
+spring.datasource.password=
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=create-drop
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.format_sql=true