[lldb] [llvm] DEBUGINFOD based DWP acquisition for LLDB (PR #70996)

[Kevin Frei via llvm-commits]

kevinfrei wrote:

I updated the diff with the plugin-ified version of the work. It's *much* cleaner with no debugger-wide changes to speak of (Thanks for the set up for that, @JDevlieghere!). I did *not* add Debuginfod logging in the LLDB part of the code, as I intend to add diagnostic debugging to the llvm-debuginfod library instead, such that all users will benefit from it.

https://github.com/llvm/llvm-project/pull/70996