refator to nestjs crud

[albjeremias]

implement a service with nestjs crud... and the refator everything to use it..

useful features:

• CRUD controllers, services and repos
• filters

try first with feedbuttons!

https://github.com/nestjsx/crud

[albjeremias]

#103

here is a trial.. but it creates too many default endpoints, and it won't write well the swagger doc. also its unknown how relations are created... would be good if this library is more used as a helper for specific issues like:

• pagination
• relations(include)