arm64 has worked great, why not add it?

[bm16ton]

Been using this on various arm64 devices arm-none-gcc-7 will fail on serial stuff so i used 9/10 and everything has worked great, all thats needed to add support is a download link to gcc toolchain and either a arm64 compile of svl or switch to the svl python script I see in uploaders, come to think of it why is that in the uploaders folder? Im guessing a diff board i dont have must use it. Ive posted this before on the forums maybe here is better. I see your current download links for gcc have you listed as the packager otherwise i woulda sent PR, plus not sure how you would prefer the svl thing to go or how you would want the svl binarys split between arches, i assume seperate x86 / arm64 folders with a simple edit to platforms.txt..also side note Artemis devkit still cant use upload button? It takes maybe 2 minutes to write a mass storage copy script and edit boards file (also posted on forums) so id like to know why you haven't done that. You guys are smart, a lot smarter then me, so im not telling you anything you dont know, So i obviously dont know sum piece of that puzzle that explains it and i like knowing things:) I feel lie the answer may gain me a little arduino internals knowledge as well..That being said...still cant use the upload button, after being out for how long? Come on you guys. Love your work and products thank you!