Make tapioca init behave like srb init

[Morriar]

Motivation

Initializing a project with Tapioca is basically a succession of 4 commands:

$ tapioca init
$ tapioca annotations
$ tapioca gems
$ tapioca todo

This PR does two things:

1. it renames the current tapioca init command into tapioca configure
2. it makes tapioca init run the configure, annotations, gems and todo commands all in one

This brings us closer from the srb init experience.

I didn't add tapioca dsl in the mix has over the few projects I tried the new tapioca init command, all crashed when trying to generate the DSLs.

[Morriar]

Amazing, thanks @egiurleo for pushing this through the finish line! 🎉