[llvm] [llvm]Add a simple Telemetry framework (PR #102323)

[James Henderson via llvm-commits]

jh7370 wrote:

> @jh7370 We would love to land this before the break. Is it possible to do that soon? Any additional tweaks and adjustments can be made later, as needed. Thanks!

I meant to respond on Friday, but apparently failed to click the "Comment" button or something. Anyway, I'm planning on looking at this as a priority this week. No promises about being able to get it over the line, but I'll see what I can do.

https://github.com/llvm/llvm-project/pull/102323