Move utilities for package and project root to their own file

[IndrajeetPatil]

Since lint.R is already quite bloated.

[codecov-commenter]

Codecov Report

Merging #1743 (b716081) into main (f0b8e57) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1743   +/-   ##
=======================================
  Coverage   98.87%   98.87%           
=======================================
  Files         108      109    +1     
  Lines        4623     4623           
=======================================
  Hits         4571     4571           
  Misses         52       52           

Impacted Files	Coverage Δ
R/lint.R	96.81% <ø> (-0.27%)	⬇️
R/settings.R	97.82% <ø> (-0.69%)	⬇️
R/settings_utils.R	100.00% <100.00%> (ø)

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[AshesITR]

The functions are related to config.R. Is there room in that file? Otherwise I'd call it config_utils.R. package_metadata_utils.R sounds like it has something to do with finding linter tags in other packages...

[IndrajeetPatil]

@AshesITR We currently don't have config.R file, so I've created config_utils.R instead.

[AshesITR]

Ah I meant settings.R

[IndrajeetPatil]

Gotcha. settings.R is already quite busy, so moved this to settings_utils.R instead.

[AshesITR]

WDYT about moving some utilities from settings.R as well (find_config() to is_directory())?

[IndrajeetPatil]

@AshesITR Moved a couple more utilities.

[AshesITR]

Thanks!