Loosen visibility for CompressionEncoding utilities

[ouillie]

Feature Request

Crates

tonic

Motivation

Code re-use.

Proposal

This is an unconventional use of tonic, but I find myself wanting to use utilities in tonic/src/codec/compression.rs such as CompressionEncoding::from_encoding_header and decompress, but these functions are not public. Is there a strong objection to making these functions public? I know people would prefer to keep the API contract as small as possible, but copy-pasting this logic just doesn't feel right. More than happy to submit the PR if it would be approvable.

Alternatives

I suppose I could just copy and paste the code into another crate.