Use Project Leyden to speed up startup time

[renanfranca]

Following this comment to improve the startup time.

Project Leyden maintains Java's flexibility. It is in early access but looks like a great place to try it and stay at the state of the art, as usual in Seed4J projects. 😀

Some references:

• Overview video
• Project Leyden: Beginnings
• Java 25 start up and warm up

[renanfranca]

Java 25 start up and warm up