refactor: transition to logr (with an ergonomic wrapper)

[krancour]

Fixes #1419

Supersedes #1791

This PR transitions us from using logrus directly throughout our code base to using a new, ergonomic wrapper around logr, with logrus still used, for now, as the underlying implementation.

If we want to transition off of logrus (since it is unsupported), this PR should leave us in a good position to accomplish that relatively easily in a follow-up.

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[codecov]

Codecov Report

Attention: Patch coverage is 42.41935% with 357 lines in your changes are missing coverage. Please review.

Project coverage is 45.69%. Comparing base (2d4aaf5) to head (8a25f1a).

❗ Current head 8a25f1a differs from pull request most recent head 2110feb

Please upload reports for the commit 2110feb to get more accurate results.

Files	Patch %	Lines
internal/controller/stages/watches.go	0.00%	83 Missing ⚠️
internal/image/newest_build_selector.go	0.00%	33 Missing ⚠️
internal/logging/logger.go	37.25%	30 Missing and 2 partials ⚠️
internal/image/lexical_selector.go	0.00%	23 Missing ⚠️
internal/image/semver_selector.go	0.00%	23 Missing ⚠️
internal/api/option/log.go	25.92%	19 Missing and 1 partial ⚠️
internal/controller/promotions/watches.go	50.00%	14 Missing ⚠️
cmd/controlplane/api.go	0.00%	13 Missing ⚠️
cmd/controlplane/controller.go	0.00%	10 Missing ⚠️
internal/kargo/kargo.go	0.00%	9 Missing ⚠️
... and 20 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2073      +/-   ##
==========================================
- Coverage   45.79%   45.69%   -0.10%     
==========================================
  Files         238      237       -1     
  Lines       16278    16401     +123     
==========================================
+ Hits         7455     7495      +40     
- Misses       8455     8540      +85     
+ Partials      368      366       -2     

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