DM-43572: Input connection with deferred binding

[tgoldina]

These are minimal changes to make an input connection with deferred binding, which would allow us to have an input connection with the same dataset type as an output. (The input would have a different dataset reference than the output.)

This is the first step in creating a Quantum Graph, which would process images with persistence. In this use case, the images must be processed in order, each QuantumNode takes prior persistence state and produces its own.

This replaces #407

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Attention: Patch coverage is 68.42105% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 82.40%. Comparing base (697e81c) to head (17eb63f).

Files	Patch %	Lines
python/lsst/pipe/base/connections.py	66.66%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #410      +/-   ##
==========================================
- Coverage   82.40%   82.40%   -0.01%     
==========================================
  Files          93       93              
  Lines       10661    10660       -1     
  Branches     2022     2020       -2     
==========================================
- Hits         8785     8784       -1     
  Misses       1522     1522              
  Partials      354      354              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[timj]

The mypy problem is caused by a change in daf_butler. I'm fixing it in lsst/daf_butler#986 and the mypy check can be rerun once that merges.