allow_lazy argument for implicit_assignment_linter to skip lazy assignment

[MichaelChirico]

Closes #2016.

[codecov-commenter]

Codecov Report

Merging #2140 (4eaf209) into main (5f18b79) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 4eaf209 differs from pull request most recent head 6068587. Consider uploading reports for the commit 6068587 to get more accurate results

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  Coverage   99.64%   99.64%           
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  Files         112      112           
  Lines        5122     5124    +2     
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+ Hits         5104     5106    +2     
  Misses         18       18           

Files Changed	Coverage Δ
R/implicit_assignment_linter.R	100.00% <100.00%> (ø)

[AshesITR]

Not sure if lazy assignment in an || expression can be useful. LGTM, though.

[MichaelChirico]

Not sure if lazy assignment in an || expression can be useful. LGTM, though.

I found at least 50 cases using it in whatever repos I have cloned locally, here's a neat example:

https://github.com/r-devel/r-svn/blob/b50422e6f5ecaa0fa6a297bbd32d7a1e24b4ac35/src/library/tools/R/build.R#L438