Added two new trigger candidate types for ICEBERG

[bieryAtFnal]

I have tried to follow the style of existing TC type names.

I would appreciate it if experts could provide feedback.

[MRiganSUSX]

Hi Kurt,
I have no issues with the naming. I do have a comment and a question though:

Question: Do we want to increase the s_trigger_candidate_version just because we added TC types? In my understanding, this was meant to reflect when we changed the actual parameters of the TC object (added, removed, changed data type and therefore size).

Comment:
Unless there is a reason not to, please add the new types to pybind enums as well:
https://github.com/DUNE-DAQ/trgdataformats/blob/production/v4/pybindsrc/trigger_candidate.cpp#L68-L110

[bieryAtFnal]

Thanks @MRiganSUSX , both of those are good points.

I've added the Python entries and backed out the version change.

[MRiganSUSX]

LGTM.

As mentioned, there will be some new types added for CRT group as well. We may need to coordinate merging.

[bieryAtFnal]

Closing this PR since its changes have been included in #30