fix(no-wait-for-side-effects): detect await expressions

[StyleShit]

Closes #742

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.25%. Comparing base (26d360e) to head (eb4c965).
Report is 17 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1008      +/-   ##
==========================================
- Coverage   96.27%   96.25%   -0.03%     
==========================================
  Files          46       47       +1     
  Lines        2472     2483      +11     
  Branches     1025     1031       +6     
==========================================
+ Hits         2380     2390      +10     
- Misses         92       93       +1     

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[Belco90]

Thanks for addressing this bug!

I see code coverage went down, so Codecov complains. Can you add extra tests for no-wait-for-multiple-assertions? It's indirectly affected (see more details).