Abstract setting throughput points

[Byte-Lab]

We want to abstract the code for setting and querying throughput points into a separate service. This is important because JVMTI breakpoints are known to be a source of inaccuracy due to the fact that it uses dynamic decompilation to fire the breakpoint code. By abstracting this, we can just call the service directly from the profiler, and change the backend implementation without having to change any other part of the profiler.