Fix/Package related asset paths are legit now

[Aqluse]

Description of the Change

Fulfills issue given https://github.com/BirjuVachhani/spider/issues/64 more precisely that kind of paths https://docs.flutter.dev/development/ui/assets-and-images#bundling-of-package-assets

Alternate Designs

No alternatives considered.

Why Should This Be In Core?

As this kind of asset paths are legit in Dart ecosystem.

Benefits

Ability to use the generator with package assets.

Possible Drawbacks

No imminent drawbacks are expected.

Verification Process

• How did you verify that all new functionality works as expected?
• How did you verify that all changed functionality works as expected?

I have run the generator for package and direct asset paths both. Output paths are whole being generated as expected.

• How did you verify that the change has not introduced any regressions?

Just verified it by running generator for direct asset paths might be impacted by following changes. No other checks have been executed.

Applicable Issues

https://github.com/BirjuVachhani/spider/issues/64

[BirjuVachhani]

@Aqluse Thank you for the PR! This looks good. I'll test it out later. Can you please add some tests for this?

[codecov-commenter]

Codecov Report

Merging #65 (446a5d4) into main (dd61a57) will increase coverage by 0.07%. The diff coverage is 81.81%.

@@            Coverage Diff             @@
##             main      #65      +/-   ##
==========================================
+ Coverage   57.75%   57.82%   +0.07%     
==========================================
  Files          31       31              
  Lines         722      728       +6     
==========================================
+ Hits          417      421       +4     
- Misses        305      307       +2     

Impacted Files	Coverage Δ
lib/src/cli/utils/constants.dart	50.00% <ø> (ø)
lib/src/dart_class_generator.dart	81.28% <75.00%> (-0.69%)	:arrow_down:
lib/src/cli/utils/helpers.dart	95.00% <100.00%> (+0.17%)	:arrow_up:

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[Aqluse]

@BirjuVachhani Unfortunately I am quite busy in nearest future.

[BirjuVachhani]

@Aqluse Can you provide me information about how to use it? I wanna test it with this asset package: https://pub.dev/packages/country_icons

[BirjuVachhani]

@Aqluse Seems like build is failing because of code formatting.

[BirjuVachhani]

Available in v4.1.0