rpdTraceControl as a context manager, callable in a loop

[jpvillam-amd]

The goal is to allow something like:

import torch
from rpdTracerControl import rpdTracerControl

for step in [1,2,3]:
    trace_file_name = f"{step}_torch.rpd"
    print(f"in {step}!!")
    with rpdTracerControl(trace_file_name, nvtx=True) as p:
        a =torch.rand(step).cuda()
        torch.add(a, 20)
    p.top_totals()

• Make rpdTracerControl into a standalone context manager similar to the functionality of torch.profile
• Make it all callable in a loop, regardless of the static nature of the library