[llvm] Set up windows specific cmake defines for lldb bazel build and config for LZMA (PR #205823)

[via llvm-commits]

youngd007 wrote:

If we want to have the configs per OS as in https://github.com/hermeticbuild/hermetic-llvm/pull/582/changes#diff-89a0aff1d9acae3ad13d73ae76df018688456984d8297e1bd3fa45cef52a61f5 & 3rd_party/llvm-project/22.x/patches/lldb-windows-config-header.patch I can make that change for 
LLDB_ENABLE_POSIX, LLDB_ENABLE_TERMIOS, HAVE_PTSNAME_R
They are 1 for mac/linux and 0 for windows

https://github.com/llvm/llvm-project/pull/205823