[llvm] Reapply "[Object] Parsing and dumping of SFrame Frame Row Entries" (#152650) (PR #152695)

[Pavel Labath via llvm-commits]

labath wrote:

@jh7370 I don't think this needs another round review, but if you want to look at it, the fixes are in the subsequent commits. The first commit is identical to the original PR. The default switch warning made me realize there's no coverage for those cases so I added tests for that.

https://github.com/llvm/llvm-project/pull/152695