Improve Infra Layer

The infra layer has some major issues that need to be fixed in order to make more sense.

- [ ] Fix naming _"Core.Infra"_. This is a Data Access Layer, not an infra Layer.
  - [ ] Change to _"Core.Infra.Data"_
- [ ] Change _Infra.Data_ to _Infra.Data.Database_ or something related
- [ ] Change _Infra.Cache_ to _Infra.Data.Caching_
- [ ] Change Providers naming
- [ ] //TODO: add more issues 
