feat: add enum support

[marcosschroh]

No description provided.

[codecov]

Codecov Report

Merging #153 (f175c39) into master (32da396) will increase coverage by 0.01%.
The diff coverage is 97.18%.

@@            Coverage Diff             @@
##           master     #153      +/-   ##
==========================================
+ Coverage   99.62%   99.64%   +0.01%     
==========================================
  Files           9        9              
  Lines         799      839      +40     
  Branches      131      145      +14     
==========================================
+ Hits          796      836      +40     
  Misses          2        2              
  Partials        1        1              

Impacted Files	Coverage Δ
dataclasses_avroschema/fields.py	99.56% <90.90%> (+<0.01%)	⬆️
dataclasses_avroschema/schema_generator.py	100.00% <100.00%> (ø)
dataclasses_avroschema/types.py	100.00% <100.00%> (ø)
dataclasses_avroschema/utils.py	100.00% <100.00%> (ø)

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