[TM-151] Include location into typecheck errors

Description

Problem: we keep track of source code locations and let-bindings stacks, but this information is not reported in the typecheck error messages.

Solution: include location and let-stack information.

Related issue(s)

Resolves https://issues.serokell.io/issue/TM-151

✅ Checklist for your Merge Request

Related changes (conditional)

• Tests (see short guidelines)

  • If I added new functionality, I added tests covering it.
  • If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.

• Documentation

  • I checked whether I should update the docs and did so if necessary:
    • Root README and other README.md files
    • Haddock
    • docs/
  • I updated changelog files of all affected packages released to Hackage if my changes are externally visible.

Stylistic guide (mandatory)

• My commits comply with the following policy.
• My code complies with the style guide.