This lays the ground work for split client and server mod code. With this first phase when enabled loom will generate a clientonly and common minecraft jar. Fabric loader and API will both need changes to support this before it can be used to develop mods.
Phase two of this project will handle splitting mod code into a client and common source set along with spliting any dependencies.
Mostly fixes#539 by sepreating decompile tasks
* Rewrite natives handling, upgrade LWJGL on ARM machines.
* Remove old natives override hack, should now always be done via gradle.
* Use "idea" everywhere
* Add server specific libraries onto their own classpath. Includes misc code cleanup.
* Start on writing the excluded server libs.
* Gradle deprecation fixes, and misc cleanup
* Add support mod.
* Make native support mod none transitive.
* Update gradle.
