Add solana-test-validator --upgradeable-program

[CriesofCarrots]

Problem

#29051 attempted to default solana-test-validator --bpf-program to use the upgradeable loader, but had to be reverted. But the issue remains that most people want to use the upgradeable loader, and the only way to do that with solana-test-validator is clone from another cluster.

Summary of Changes

Add --upgradeable-program flag to automatically initialize solana-test-validator with an upgradeable program. Parallels #29994
I added this as a separate path from the existing param because I thought it would be cool to support an optional upgrade authority, which would break the existing --bpf-program interface. However, we could make --bpf-program an alias for --upgradeable-program <PROGRAM_ID> <PROGRAM.SO> none. What do you think?
If you like that idea, I can remove a bunch of the duplication here, and switch from ProgramInfo to UpgradeableProgramInfo everywhere.

[joncinque]

Looks good! Since the SPL programs that use the old loader are already included with the correct loader, it seems right to have --bpf-loader alias to --upgradeable-loader. I'm going to take a quick look through the Anchor repo to make sure that this won't break something in their testing framework using anchor test.

[joncinque]

I can't find any references to the exact loader address anywhere in the Anchor repo, so I think it'll be safe to make the aliasing change. Just in case though, can you do it in a separate PR so we can easily revert it if needed?

[CriesofCarrots]

I can't find any references to the exact loader address anywhere in the Anchor repo, so I think it'll be safe to make the aliasing change. Just in case though, can you do it in a separate PR so we can easily revert it if needed?

Yep, that sounds like a plan. Thanks for checking on that!

[joncinque]

Looks good, thanks!

[CriesofCarrots]

Sorry @joncinque , can I get one last ✅ ? I force pushed to pick up the test fix.

[joncinque]

Sorry for the lateness, looks good again!

[CriesofCarrots]

Sorry for the lateness, looks good again!

Lol, sorry!! I was just rebasing on #29893... I'm going to need one more 🙏