feat: arguments should be supported in both str and native format

Many arguments are expected to be serialized `str` e.g. `solc_args`. However, crytic-compile will often need to deserialize them and also serialize again.

While it works perfectly for user inputs (e.g. arguments taken from CLI), it would be a unnecessary overhead when CryticCompile is used as a library that developers need to serialize for no use (because soon will be deserized in CryticCompile).