[Documentation]: Add the FastJ templates to the org repo

[Adit Chakraborty]

Since this is the FastJ org, the templates like https://github.com/lucasstarsz/fastj-java-template should be moved into the fastjengine repo.

[Andrew Dey]

That's a fair suggestion -- I'll see what I can do about it when I have some time. It does make sense though, having the "official" templates in the actual organization.