Move folder structure to separate by feature instead of by type

[joshuaalpuerto]

|-- src
|   `-- user
|       |-- domain
|       |-- app
|       |-- routes
|       |-- repository
|   `-- companies
|       |-- controllers
|       |-- models
|       |-- views
|       |-- repository
`-- config
`-- lib
`-- spec
`-- vendor

Advantages

• Clear, normalized separation of concerns.
• It groups together functions that actually work together

[bfunc]

Is there any progress on that?