Add ksoroban prove command

[gtrepta]

This adds ksoroban prove to the CLI:

• ksoroban prove run will run the proofs for the test contract in the current working directory.
• ksoroban prove view will view the proof id that was saved in the folder specified by --proof-dir and --id

It's currently limited by the symbolic variables it can generate, notably Vec, Map, and Symbol are not constrained properly, but all of the integral variables should be ok.

[virgil-serbanuta]

This looks good, although I didn't check everything. Most likely, @bbyalcinkaya should approve, but I can also do that if needed.

My only question is whether run_prove uses the booster or not. I'm guessing that it does not (I may be wrong), so the next question would be if you want to use it.

[gtrepta]

My only question is whether run_prove uses the booster or not. I'm guessing that it does not (I may be wrong), so the next question would be if you want to use it.

I was trying to determine if the booster is being used when the proof runner is invoked here, but I haven't been able to so far. I of course would like to make sure that the booster is being used, and planned to ask about it when working on the next PR.

[bbyalcinkaya]

My only question is whether run_prove uses the booster or not. I'm guessing that it does not (I may be wrong), so the next question would be if you want to use it.

Since there are only LLVM (without 'llvm_kompile_type': LLVMKompileType.C) and Haskell in the compile targets, it seems that Booster is not being used.

[bbyalcinkaya]

Everything looks good, thank you!