Consolidated the contents of CpuProfilerImp.h into CpuProfiler.h
Renamed CpuProfilerImpl.cpp to CpuProfiler.cpp
Collapsed the CpuProfilerImpl class into the intermediary CpuProfiler interface class, removing that interface type
Replaced all calls to the old CpuProfiler interface with AZ::Debug::ProfilerSystemInterface
Added accessor to see if a continuous capture is in progress to AZ::Debug::ProfilerRequests
Signed-off-by: AMZN-ScottR 24445312+AMZN-ScottR@users.noreply.github.com