[llvm] [llvm-debuginfo-analyzer] Add support for DWARF `DW_AT_byte_size` (PR #139110)

[Javier Lopez-Gomez via llvm-commits]

jalopezg-git wrote:

I have also updated `tools/llvm-debuginfo-analyzer/...` tests to check that `Size = ` is printed for types.

https://github.com/llvm/llvm-project/pull/139110