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

[James Henderson via llvm-commits]

================
@@ -0,0 +1,246 @@
+===========================
+Telemetry framework in LLVM
+===========================
+
+.. contents::
+   :local:
+
+.. toctree::
+   :hidden:
+
+===========================
+Telemetry framework in LLVM
----------------
jh7370 wrote:

This header appears to be a duplicate of the one at the top of the file?

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