Fixed Lz4Raw compression error (if input is tiny)

[dantengsky]

Issue

• Lz4Raw compression failed if input is tiny #117

By using lz4::block::compress_bound to determine the size of output buffer

[codecov-commenter]

Codecov Report

Merging #118 (ea7820d) into main (f8eb243) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #118   +/-   ##
=======================================
  Coverage   74.51%   74.51%           
=======================================
  Files          77       77           
  Lines        3410     3410           
=======================================
  Hits         2541     2541           
  Misses        869      869           

Impacted Files	Coverage Δ
src/compression.rs	82.22% <100.00%> (ø)

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[jorgecarleitao]

Thanks a lot!