✨ Dio.clone

[AlexV525]

Similar to copyWith, Dio.clone would be a handy method to let users create new instances with local or grouping usages.

New Pull Request Checklist

• I have read the Documentation
• I have searched for a similar pull request in the project and found none
• I have updated this branch with the latest main branch to avoid conflicts (via merge from master or rebase)
• I have added the required tests to prove the fix/feature I'm adding
• I have updated the documentation (if necessary)
• I have run the tests without failures
• I have updated the CHANGELOG.md in the corresponding package

[kuhnroyal]

Independent of this PR, what do you think of making the Dio instance completely immutable in version 6?

[AlexV525]

Independent of this PR, what do you think of making the Dio instance completely immutable in version 6?

Yeah I like the idea, and I'm also exploring the path. The thing is Dio's structure makes pieces nested, we cannot fluently use Dio in cases of grouping usage. So going immutable might be a better path to improve the overall usability and readability.

About the grouping usage, you can read this through translation: https://juejin.cn/post/7213356423811366949

[github-actions]

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
dio/lib/src/dio_mixin.dart	🟢 93.99%	🟢 94.14%	🟢 0.15%
Overall Coverage	🟢 84.74%	🟢 84.79%	🟢 0.05%

Minimum allowed coverage is 0%, this run produced 84.79%