Feature: templates.scripts to run commands with the newly created site

[slaFFik]

Similar to what composer.json : scripts allows us to do - execute a certain script.

So, when a site is created using this templates, for example:

[
	"name" => "Basic WordPress",
	"scripts" => [
		"wp post generate --count=10",
		"wp comment generate --count=20",
		"wp import /home/user/Projects/prefill.xml --authors=create",
	]
],

the commands from an array in the scripts section will be executed, allowing to do something with the new WP install: hydrate the database from the SQL or wrx/xml file, configure settings, etc. Tons of possibilities.

I don't think this needs to be in the defaults section though, can't think of the use cases where it's needed globally for all templates.