Add other missing imports

[waifod]

We try to fix the workflow failures by adding missing imports.

[waifod]

Alright, it looks like the build issues are fixed, but now there's a test failure due to an exception being thrown.

From what I see, the tests do not expect failures, and since locally they were running fine (when they were running), this failure may come from some undefined behavior. Hooray!

[lluiscamino]

Tests failure is so weird! It's failing in this line. It's like if the program was trying to do a binary operation with an identifier as the token (e.g. a IDENTIFIER b instead of a = b).

We should add a try catch and log which test failed and try to debug from there. I can work on this when I have time, if you don't want to take a look at it. Or if you want, go ahead!

[waifod]

I agree on adding logs, but I don't like exceptions as they are generally considered bad practices.

As I said already, we should also add a testing framework to facilitate things.

[lluiscamino]

Yeah, eventually I wanted to add some kind of errors logger than saves all of the parsing or execution errors and displays them to the user. So that if there's multiple errors in a problem we log all of them instead of exiting the program in the first found error.