feat(kuma-cp) add simple HTTP connection configurers

[jpeach]

Summary

Add a few HTTP connection manager configurers that are helpful
for gateway use cases.

Full changelog

N/A

Issues resolved

N/A

Documentation

N/A

Testing

• Unit tests
• E2E tests
• Manual testing on Universal
• Manual testing on Kubernetes

Backwards compatibility

• Add backport-to-stable label if the code is backwards compatible. Otherwise, list breaking changes.

[codecov-commenter]

Codecov Report

Merging #2593 (a717577) into master (a931218) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2593      +/-   ##
==========================================
+ Coverage   52.16%   52.25%   +0.08%     
==========================================
  Files         869      869              
  Lines       48568    48585      +17     
==========================================
+ Hits        25337    25388      +51     
+ Misses      21185    21150      -35     
- Partials     2046     2047       +1     

Impacted Files	Coverage Δ
pkg/xds/envoy/listeners/configurers.go	96.93% <100.00%> (+0.29%)	⬆️
api/observability/v1/mads.pb.go	35.56% <0.00%> (+1.03%)	⬆️
pkg/dns/vips_allocator.go	75.63% <0.00%> (+1.68%)	⬆️
pkg/insights/resyncer.go	65.81% <0.00%> (+1.70%)	⬆️
pkg/mads/v1/client/client.go	43.75% <0.00%> (+2.50%)	⬆️
pkg/core/resources/manager/cache.go	84.41% <0.00%> (+2.59%)	⬆️
pkg/plugins/resources/memory/store.go	82.06% <0.00%> (+4.34%)	⬆️
pkg/core/bootstrap/autoconfig.go	54.46% <0.00%> (+8.03%)	⬆️
pkg/core/resources/store/customizable_store.go	88.88% <0.00%> (+11.11%)	⬆️
pkg/insights/components.go	100.00% <0.00%> (+30.00%)	⬆️

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