added a 'neutron reconstruction' algorithm which creates a neutron candidate that merges all clusters in a given bank

[sebouh137]

Briefly, what does this PR introduce?

Adds a cluster-merging algorithm that creates a "neutron candidate" (of type ReconstructedParticle) that merges all clusters in a given bank together.

What kind of change does this PR introduce?

• [ ] Bug fix (issue #__)
• [X] New feature (issue #1403 )
• [ ] Documentation update
• [ ] Other: __

Please check if this PR fulfills the following:

• [X] Tests for the changes have been added
• [X] Documentation has been added / updated
• [X] Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

no

Does this PR change default behavior?

Yes, changes ZDC reconstruction to use ImagingTopo clustering instead of island clustering. Also tweaked the ImagingTopo algorithm parameters that are used in ZDC recon

[wdconinc]

@sebouh137 Please fix merge conflicts.

[github-actions[bot]]

Capybara summary for PR 1404

• rec_dis_10x100_minQ2=0_craterlake
• rec_dis_10x100_minQ2=1000_craterlake
• rec_dis_18x275_minQ2=0_craterlake
• rec_dis_18x275_minQ2=1000_craterlake
• rec_dis_5x41_minQ2=0_craterlake
• rec_e_1GeV_20GeV_craterlake
• rec_pi_1GeV_20GeV_craterlake ^{_{Last updated 2024-05-07T10:31-04:00 fd2202d1644cad623d3d4a4d5a406b9bbbfb0497}}

[sebouh137]

@sebouh137 Please fix merge conflicts.

Fixed

[sebouh137]

Thanks for the development, Sebouh! I have a minor fix suggested on the code itself, but I have some larger conceptual suggestions:

• I think this might make more sense alongside the reco algorithms since this is taking the final step from detector objects (topoclusters) to physics objects (neutron candidates) Ok, I have moved it there.
• I would suggest renaming this to something like FarForwardNeutronReconstrution since neutrons will also be reconstructed elsewhere in ePIC with very different algorithms. Ok, I have changed the name.