Add support for compressed blob uploads

[chrisstaite-menlo]

Currently we only support compression on the transport, add support for compressed uploads:

main/uploads/94448848-5c26-4e27-9448-50f9fea1947e/compressed-blobs/zstd/33cc97ba1cbeb6c3c542d594f3d96cf0a80f562a287c50f61783763be42586bd/79

[chrisstaite-menlo]

First update remote_execution.proto to v2.3 in #268
Then we can add support for the different compression types

[chrisstaite-menlo]

#281 adds support for reading the compressed blob resource names. Now we just need to handle the compressed blob.

[chrisstaite-menlo]

Might be nice if these were passed through GrpcStore and then if the CompressionStore were in use it could simply used the pre-compressed content?

[allada]

Might be nice if these were passed through GrpcStore and then if the CompressionStore were in use it could simply used the pre-compressed content?

We can read the capabilities API in the GrpcStore, and if it supports compressed uploads/downloads use it?

[blizzardc0der]

I'd like to work on this issue. cc: @allada