Add avro codec

[Licenser]

Pull request

Description

A simple encoder and decoder of the apache avro binary codec

Related

• Related Issues: fixes Add avro codec #379

Checklist

• The RFC, if required, has been submitted and approved
• Any user-facing impact of the changes is reflected in docs.tremor.rs
• The code is tested
• Use of unsafe code is reasoned about in a comment
• Update CHANGELOG.md appropriately, recording any changes, bug fixes, or other observable changes in behavior
• The performance impact of the change is measured (see below)

Performance

-/-

[codecov]

Codecov Report

Merging #2343 (41b4f22) into main (20c76b7) will decrease coverage by 0.07%.
The diff coverage is 82.05%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2343      +/-   ##
==========================================
- Coverage   91.09%   91.03%   -0.07%     
==========================================
  Files         274      275       +1     
  Lines       58233    58649     +416     
==========================================
+ Hits        53048    53390     +342     
- Misses       5185     5259      +74     

Flag	Coverage Δ
unittests	91.03% <82.05%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
tremor-value/src/error.rs	71.42% <0.00%> (-3.58%)	⬇️
tremor-value/src/value.rs	98.92% <66.66%> (-0.18%)	⬇️
src/codec/avro.rs	82.30% <82.30%> (ø)
src/codec.rs	85.71% <100.00%> (+0.23%)	⬆️
src/errors.rs	84.35% <100.00%> (+0.03%)	⬆️
tremor-value/src/serde/value/de.rs	78.71% <100.00%> (ø)

... and 3 files with indirect coverage changes

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[darach]

LGTM. 👍