MacOS support overhaul, Apple M1 and breaking changes

[RiccardoBlb]

If we get this up

JMonkey Initializer - Creating a dynamic Gradle temple to start a project from

What is it In Getting started in JMonkeyEngine - #11 by richtea we were discussing the possibility of a JMonkey Initialiser. Similar to the Spring Initialzr to produce a dynamically generated “starter template” as a zip to make Gradle based development less scary for newcomers. I have created a prototype of this project hosted at jmeinitializer.onemillionworlds.com and the source for it is at GitHub - richardTingle/jmeinitializer (The template with merge fields is at jmeinitializer/src/main/re…

It can just propose alternatives to the jme3-awt-dialogs (or a warning) if mac os is selected as platform