Build system refactor

[clienthax]

• Move get-config-scripts to utils folder.
• Add NO_SAVANNAH env flag for CI usage.
• Switch download hash check from md5 -> sha25.
• Archive links updated to ssl where possible.
• Replaced download script as one one was unreliable for downloads with no checksums.
• Made smoke test print out actual failing files.
• Added util script for generating seperate build steps for github actions.
• Added MacOS x64 and arm runners to verify things compile, theoutput should be the same either way but already found one bug with this.
• Moved psl1ght build to this repo.

Links need to be updated once the following are merged
ps3dev/ps3toolchain#139
ps3dev/PSL1GHT#162

[zeldin]

• Replaced download script as one one was unreliable for downloads with no checksums.

Could you expand on this please? Obviously for files that have no checksum the checksum can't be checked, but that is true of your modified version as well. The files which do not have checksums are the repo tarballs which don't have stable checksums due to how github generates them. A solution to that can be to use submodules instead, as in #49.

[clienthax]

• Replaced download script as one one was unreliable for downloads with no checksums.

Could you expand on this please? Obviously for files that have no checksum the checksum can't be checked, but that is true of your modified version as well. The files which do not have checksums are the repo tarballs which don't have stable checksums due to how github generates them. A solution to that can be to use submodules instead, as in #49.

After I changed it to sha256 sums it was failing to download the ones without checksums due to a grep returning the wrong things for them iirc, something with the pattern matching.

But ye, ideally we just get rid of the downloads and mirror everything into ps3dev eventually