tools/rtla: Consolidate code between osnoise/timerlat and hist/top

tools/rtla: Consolidate code between osnoise/timerlat and hist/top

Currently a lot of code is duplicated between the different rtla tools,
making maintenance more difficult, and encouraging divergence such as
features that are only implemented for certain tools even though they
could be more broadly applicable.

Merge the various main() functions into a common run_tool() with an ops
struct for tool-specific details.

Implement enough support for actions on osnoise to not need to keep the
old params->trace_output path.

Cc: John Kacur <jkacur@redhat.com>
Cc: Costa Shulyupin <costa.shul@redhat.com>
Link: https://lore.kernel.org/20250907022325.243930-5-crwood@redhat.com
Reviewed-by: Tomas Glozar  <tglozar@redhat.com>
Signed-off-by: Crystal Wood <crwood@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>