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

[Vy Nguyen via llvm-commits]

oontvoo wrote:

> Please follow https://llvm.org/docs/CodingStandards.html#name-types-functions-variables-and-enumerators-properly. Tests and/or a user would help us to better understand the intent.

Added the set of tests. PTAL.

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