allow_preamble in library_call_linter() to skip setup code

[MichaelChirico]

Closes #2161

[AshesITR]

❤️ our test suite.

Code LGTM, just add the configurable tag.

[codecov-commenter]

Codecov Report

Merging #2170 (5e08415) into main (4c88419) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 5e08415 differs from pull request most recent head ee062ce. Consider uploading reports for the commit ee062ce to get more accurate results

@@           Coverage Diff           @@
##             main    #2170   +/-   ##
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  Coverage   99.64%   99.64%           
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  Files         112      112           
  Lines        5124     5129    +5     
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+ Hits         5106     5111    +5     
  Misses         18       18           

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