Implement {cmm.asm}-{options,sources} for real

While those buildinfo fields were added to the parser some time
ago via 57d7f28e and
4a287659 that work was never completed
by implementing the necessary build/sdist logic in Cabal.

This commit remedies this oversight by implementing and wiring up the
missing build logic.

NOTE: This is a backport of (at time of writing) unfinished
      https://github.com/haskell/cabal/pull/6033

 to the 3.0 branch
      Specifically preprocessor-generated asm/cmm-sources need more
      work.

Co-authored-by: Sylvain Henry <sylvain@haskus.fr>