Fix NameEmail equality comparison

[stephen-bunn]

Change Summary

Introducing an __eq__ for networks.NameEmail as two similar instances were not being correctly evaluated as equal.

import pydantic

# previously this would raise an AssertionError
assert pydantic.NameEmail("test", "test@example.com") == pydantic.NameEmail("test", "test@example.com")1

Related issue number

closes #1514

Checklist

• Unit tests for the changes exist
• Tests pass on CI and coverage remains at 100%
• Documentation reflects the changes where applicable
• changes/<pull request or issue id>-<github username>.md file added describing change
  (see changes/README.md for details)

[codecov]

Codecov Report

Merging #1527 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #1527   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           21        21           
  Lines         3761      3772   +11     
  Branches       748       749    +1     
=========================================
+ Hits          3761      3772   +11     

Impacted Files	Coverage Δ
pydantic/networks.py	100.00% <100.00%> (ø)
pydantic/utils.py	100.00% <0.00%> (ø)

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[samuelcolvin]

otherwise LGTM

[samuelcolvin]

Awesome, thank you.