DM-39411: Add timing metrics for remaining AP pipeline tasks

[kherner]

…t tasks

{Summary of changes. Prefix PR title with ticket handle.}

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• Passes Jenkins CI.
• Documentation is up-to-date.

Preview the docs at: https://pipelines.lsst.io/v/DM-FIXME

[kfindeisen]

I somehow overlooked this, but your commit message overflowed GitHub's limits (72 characters). Perhaps try:

add missing runtime metrics

The timing metrics for GetTemplate, TransformDiaSourceCatalog, and
RBTransiNet were previously missing.