[tmva][sofie] Profiler code generation for SOFIE

[lmoneta]

This PR introduces a time-based profiler for the SOFIE inference engine. It provides developers with the tools to analyze the performance of generated C++ models by measuring the execution time of each individual operator, as well as the total inference time.

Changes or fixes:

A new option, SOFIE::Options::kProfile, is added to the RModel::Generate() method to enable the feature.
When enabled, a new RModelProfiler helper class instruments the generated doInfer() method with std::chrono timers.
Utility functions like PrintProfilingResults() and GetOpAvgTime() are added to the generated Session struct to access the collected timing data.
Checklist:

Tested changes locally by running inference in a loop and verifying the timing results.
updated the docs (if necessary)

This PR replaces #19558 by fixing the conflicts with rebasing to master

[dpiparo]

Is there perhaps a way in which we could test this new nice feature?

[github-actions]

Test Results

    16 files      16 suites   2d 20h 55m 36s ⏱️
 3 659 tests  3 649 ✅   0 💤 10 ❌
57 117 runs  57 001 ✅ 106 💤 10 ❌

For more details on these failures, see this check.

Results for commit 8639e94.

[lmoneta]

Yes, I think we should add a tutorial for this, generting code instrumented with timers and then producing the results.
@olia110 can you add this new tutorial?

[olia110]

Yes, thank you. I will look how to add some testing and will add a tutorial.