Added application layer and blockchain implementation

src/main/resources/application.properties

@@ -2,7 +2,7 @@ server.port=8080
 application.title=Cartfidential
 application.version=1.0.0
 
-spring.datasource.initialization-mode=always
+spring.sql.init.mode=always
 spring.datasource.username = rv_user
 spring.datasource.password = rv_password
 spring.datasource.driverClassName = org.postgresql.Driver