Async-friendly decompress

[droundy]

I started creating an alternate decompressor that would work better with async than the Read based one you have. The issue is that in my async program the bytes come over the network in chunks and I can't write a non-async Read without introducing additional plumbing that I'd rather avoid.

This PR isn't very good yet, but I'm wondering if something like this would be of interest to you?

[codecov]

Codecov Report

Merging #145 (bfa4fc8) into main (23b05b0) will decrease coverage by 6.81%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #145      +/-   ##
==========================================
- Coverage   89.02%   82.21%   -6.81%     
==========================================
  Files          13       13              
  Lines        2478     2682     +204     
==========================================
- Hits         2206     2205       -1     
- Misses        272      477     +205     

Impacted Files	Coverage Δ
src/frame/mod.rs	53.33% <ø> (ø)
src/frame/raw_decompress.rs	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

[PSeitz]

I'm open to add async support, if the code is not duplicated.
There's also the risk of blocking the async runtime, by doing too much work on a task, so the additional plumbing may be a good thing.

Related issue: #15