Merge hauleth/erl-brotli with yjh0502/erl-brotli

[hauleth]

Improvements:

• expanding test suite, property testing, more examples, etc.
• GitHub Actions for CI
• decompression support
• streaming API support
• cleanup of C code
• better errors
• support for more configuration options
• dirty schedulers configuration for CPU intensive tasks
• code formatting
• coverage reporting

Close #6 Close #4

[yjh0502]

@hauleth Please feel free to merge changes and publish changes to hex.pm if you think it okay/needed. Thanks!