[clang] [clang-repl] Lay the basic infrastructure for pretty printing of types (PR #148701)

[Vassil Vassilev via cfe-commits]

vgvassilev wrote:

I added a fix for the system-z, however, I believe I still a maintainer to confirm this is not a big-endian related issue.

I realize I do not understand the sanitizer failures. I ran the tests with valgrind and it seems happy with it. @vitalybuka what should I do here?

https://github.com/llvm/llvm-project/pull/148701