Consider starting profiler once

[korniltsev]

Currently we do start stop dump every 15 seconds. It make sense to do start once and then never stop and only do dump every 15 seconds

We may need to use output file patterns

-f FILENAME - the file name to dump the profile information to.
%p in the file name is expanded to the PID of the target JVM;
%t - to the timestamp;
%n{MAX} - to the sequence number;
%{ENV} - to the value of the given environment variable.

https://github.com/grafana/pyroscope/issues/3054#issuecomment-2216631256