[TM-268] Add `tasty-hunit-compat` package

Description

Problem: tasty-hunit package does not provide an actual integration of HUnit with tasty, rather defines its own primitives so that it cannot be used with tests written using HUnit. Previously we workarounded this by adding our own implementation in Test.Tasty.HUnit module of morley:morley-test, but this way it could not be used in other subpackages.

Solution: create a separate tasty-hunit-compat package with a proper integration logic.

We use some different logic there comparing to old Test.Tasty.HUnit module; now we can depend on tasty-hunit (previously it was difficult because we want import Test.Tasty.HUnit to automatically refer to our module) and so now we just modify exceptions in our Assertions and then feed them to tasty-hunit's functions.

Related issue(s)

https://issues.serokell.io/issue/TM-268

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