[llvm] Allow the dumping of .dwo files contents to show up when dumping an e… (PR #66726)

[Greg Clayton via llvm-commits]

clayborg wrote:

Ok, all feedback has been fixed. This patch current only does:
- dumping of the entire .dwo file if the `--dwo` option is specified
- allows lookups by name with `--name <name>` in the .dwo files automatically
- allows lookups by address with `--lookup <addr>` in the .dwo files automatically

Future patches will add the ability to dump specific items by debug info offset in a specific dwo file as @dwblaikie had suggested.

https://github.com/llvm/llvm-project/pull/66726