feat: add formal ways to detect zksync solc throughout the compilation flow

[elfedy]

• Add SolcVersionInfo struct that contains both solc and zksync solc version metadata among a get_solc_version_info method to retrieve it from a path to a solc executable
• Use those in the compilation flow to print the information to the user and also save the value as a field on the compiler output.
• ZkSolc struct now has SolcVersionInfo in it, this is retrieved when constructing it. It is now more of a zksolc+solc wrapper rather than just the zolc command wrapper.
• zksolc paths fetch/installation methods now return paths and not the ZkSolc struct,.

[Jrigada]

LGTM