WIP Binaries API Julep

[iamed2]

TODO:

• [ ] Failures with HTTP error codes
• [ ] Deprecation/transition strategy/timeline
• [ ] Infrastructure proposal example
• [ ] Scope box

[tkelman]

See https://github.com/JuliaLang/julia/pull/18554

[iamed2]

Oops, I did not intend to open this already. Well, oh well.