[llvm-dwarfdump] Support for DW_AT_language_name and DW_AT_language_version (#162449)
Depends on:
* https://github.com/llvm/llvm-project/pull/162434
* https://github.com/llvm/llvm-project/pull/162446
Makes sure we dump the attributes in a user-friendly way.
More info on the attributes here: https://dwarfstd.org/languages-v6.html