Add an interactive script for generating a package skeleton

[matteodelabre]

(As proposed by @raisjnn and @LinusCDE on Discord.)

Given a (new) package name, it should create a directory for that package and initialize a package file from a template. The script can ask for the user to provide additional metadata at the command prompt and give them directions on how to continue writing the package file. We should also have a flag to disable this interactivity and just generate a template file (for users who prefer editing the file directly).

Possible scenario:

$ git clone [email protected]:toltec-dev/toltec.git
$ cd toltec
$ ./scripts/init.py
package name: my-package
package version: 0.0.1-1
project url: 
... (and so on)

We could add hints or outright force the user to confirm a choice we find not good (like _ in versions or missing -n at the end) without the user needing to read how to make it him/herself. (kinda like npm init or other project creation tools i guess)