Re-enabling Dependency Type Checking - Readable Stream Type Errors

[CMCDragonkai]

We should re-enable the dependency type checking as this should ensure that our dependencies are also correctly typed.

We currently use:

    "skipLibCheck": true,

To avoid checking the types of our dependencies.

ATM, the readable-stream has type errors however this was fixed upstream: DefinitelyTyped/DefinitelyTyped#44828

We should be able to remove the line and renable checking the types of all of our work including dependencies.

Background context: https://gitlab.com/MatrixAI/Engineering/Polykey/js-polykey/-/issues/238

[CMCDragonkai]

@tegefaulkes you might as well check this too.

[tegefaulkes]

I removed "skipLibCheck": true, from the tsconfig.json. It builds fine.
So this issue is resolved unless the error occurs elsewhere besides building.

[CMCDragonkai]

Ok this can be closed when you merge the async tests MR.

[tegefaulkes]

!202 has been merged fixing this. closing issue.