Deploy transaction is not _declaring_ the class

[kkovaacs]

While using the re-execution tool I've found that Deploy transactions are not working: it looks like Deploy is missing the step of actually declaring the class.

The Deploy transaction actually did declare the class and deployed a contract with the class just declared. Currently the code seems to do just the second step -- which won't work because the class is not really added to state.

[kkovaacs]

Adding a state.set_contract_class(&self.contract_hash, &self.contract_class) call to Deploy.apply() seems to fix the issue (after adding self.contract_class that contains the actual class definition of course).