[Chore] Add missing FromExpression conversions

Description

Problem: In #696 (closed) we've added chest and chest_key types. However, one conversion for those types is missing.

Solution: Add the missing conversion. Also add the types to cleveland generators.

Related issue(s)

I've eschewed creating an issue for this, it's a very straightforward minor fix.

Checklist for your Merge Request

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• 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.

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  • I updated changelog files of all affected packages released to Hackage if my changes are externally visible.

I don't know if it's worth mentioning in the changelog.

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