Add RequiredNonEmptyValidator

[laogao]

Connection with issue(s)

Close #377

Solution description

Creates a separate RequiredNonEmptyValidator to cover cases of empty Iterables ,Maps and Sets.

Screenshots or Videos

To Do

• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add unit test to verify new or fixed behaviour
• If apply, add documentation to code properties and package readme

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.91%. Comparing base (711568b) to head (84e0557).
⚠️ Report is 187 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #380      +/-   ##
==========================================
+ Coverage   95.88%   95.91%   +0.03%     
==========================================
  Files          69       70       +1     
  Lines        1338     1348      +10     
==========================================
+ Hits         1283     1293      +10     
  Misses         55       55              

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