feat: add Prague evm version

[rakita]

Adds Prague spec.

TODO: PragueEOF support is needed.

[mattsse]

we can add this to the enum because solc already has support for this

https://github.com/ethereum/solidity/blob/5e9d38e9dc23d124b87bc3aa85714fd4db7c8820/liblangutil/EVMVersion.h#L63

but we can't add it to normalize_version_solc yet because we don't know the version yet and 0.8.26 is incorrect I believe because that's the latest release:

https://github.com/ethereum/solidity/releases/tag/v0.8.26

[fgimenez]

but we can't add it to normalize_version_solc yet because we don't know the version yet and 0.8.26 is incorrect I believe because that's the latest release:

good catch, I see in solidity's repo that the prague EVM version has been already introduced ethereum/solidity#15152 not sure if this means it will be part of the next release?

[mattsse]

lgtm