[confighttp] Add support for compression level

[khushijain21]

Is your feature request related to a problem? Please describe.
Adding compression level as a feature provides flexibility to users, enabling them to fine-tune the trade-off between compression speed and compression ratio to suit their specific use cases.

Describe the solution you'd like

Add compression_level on confighttp package

Additional context

compression_level helps users choose between more memory or more cpu usage. It is also supported by most compression algorithms

[jmacd]

Suggest creating an identical configuration for users to control gRPC compression levels.

See https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/internal/otelarrow/compression.

[axw]

Good timing, #11805 landed yesterday for confighttp. I'd suggest creating a separate issue for configgrpc if there's not one already.