Add PR Coverage Comment

[mikelane]

This channge tries out inserting the coverage report into the PR comments.

• trying out pytest coverage report
• capitalization

[github-actions]

✅ Result of Pytest Coverage

---------- coverage: platform linux, python 3.6.12-final-0 -----------

Name	Stmts	Miss	Cover
reddit_get/init.py	1	0	100%
reddit_get/cli.py	65	0	100%
reddit_get/types/init.py	1	0	100%
reddit_get/types/enums.py	27	0	100%
TOTAL	94	0	100%
�[32mRequired	test	coverage	of
=============================	slowest	10	durations

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (main@ceac802). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             main        #4   +/-   ##
========================================
  Coverage        ?   100.00%           
========================================
  Files           ?         3           
  Lines           ?        93           
  Branches        ?         0           
========================================
  Hits            ?        93           
  Misses          ?         0           
  Partials        ?         0           

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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