feat(consumer group): allow assigning plugins to consumer groups

[programmer04]

What this PR does / why we need it:

It allows specifying plugins for consumer groups via annotation, a subset of plugins is supported this way by Gateway https://github.com/Kong/kong-ee/pull/5291. Adjust integration test - introduce proper testing scenario (it checks actual behavior now).

Which issue this PR fixes:

This is part of #3728

Special notes for your reviewer:

• it imports deck directly from main branch to include unreleased yet changes introduced in feat: support scoping plugins to consumer-groups deck#959
• integration test TestConsumerGroup is always skipped for nonenterprise deployments and enterprise ones that use Kong Gateway < 3.4 (unreleased yet). Hence TestConsumerGroup for this PR is skipped because a used image is 3.3 see:
  - integration-tests / enterprise-postgres
  - integration-tests / enterprise-dbless
  But you can check that integration test TestConsumerGroup passes (is not skipped) by inspecting the result of a run of on-demand run integration tests (triggered with the label ci/run-nightly). They uses latest Kong Gateway image - feat(consumer group): allow assigning plugins to consumer groups #4452 (comment):
  - integration-tests-enterprise-postgres-nightly
  - integration-tests-enterprise-dbless-nightly

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

Patch coverage: 76.9% and project coverage change: -0.3% ⚠️

Comparison is base (7df5df2) 67.9% compared to head (2e01822) 67.7%.

❗ Current head 2e01822 differs from pull request most recent head 37818c1. Consider uploading reports for the commit 37818c1 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #4452     +/-   ##
=======================================
- Coverage   67.9%   67.7%   -0.3%     
=======================================
  Files        161     161             
  Lines      18817   18839     +22     
=======================================
- Hits       12788   12756     -32     
- Misses      5270    5323     +53     
- Partials     759     760      +1     

Files Changed	Coverage Δ
internal/dataplane/deckgen/deckgen.go	60.3% <0.0%> (-3.7%)	⬇️
internal/dataplane/kongstate/kongstate.go	72.7% <81.2%> (+0.4%)	⬆️
internal/dataplane/parser/parser.go	84.2% <100.0%> (-0.8%)	⬇️
internal/util/relations.go	100.0% <100.0%> (ø)

... and 5 files with indirect coverage changes

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[team-k8s-bot]

Integration (targeted) tests with KIND-based cluster and latest images were started at https://github.com/Kong/kubernetes-ingress-controller/actions/runs/5806126819

[randmonkey]

@programmer04 please re-run make lint to pass the linting check.