Description

We have a requirement to select GZip vs. Brotli on some specific routes. In this PR, we are adding support for per-route compressor library override in the compressor filter. With this change, routes would be able to specify a different compressor library (e.g., gzip, brotli) via the compressor_library field on a per-route basis.

This would allow different routes to use different compression algorithms and settings while maintaining the same filter configuration.

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Commit Message: compressor: expose compressor_library for per-route overrides
Additional Description: Added support to allow different routes to use different compression algorithms and settings while maintaining the same filter configuration.
Risk Level: Low
Testing: Added Unit + Integration Tests
Docs Changes: Added
Release Notes: Added

Request variables

Key	Value
ref	aaf10ca
sha	525d8d7
pr	41177
base-sha	b56bbc5
actor	@agrawroh
message	compressor: expose compressor_library for per-route overrides...
started	1759282130.304339
target-branch	main
trusted	false

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