Add __replace__ magic method to BaseContainer for copy.replace() support

[AdrianAcala]

• Implemented the replace method in BaseContainer to allow for the creation of new container instances with modified internal values, in line with the copy.replace() function introduced in Python 3.13.
• Updated documentation to reflect this new feature and provided usage examples.
• Added tests to ensure the correct functionality of the replace method and its integration with the copy module.

I have made things!

Checklist

• [x] I have double checked that there are no unrelated changes in this pull request (old patches, accidental config files, etc)
• [x] I have created at least one test case for the changes I have made
• [x] I have updated the documentation for the changes I have made
• [x] I have added my changes to the CHANGELOG.md

Related issues

• Closes #1920

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[AdrianAcala]

@sobolevn , sorry about the delay. My family got sick and then I got sick and then work has been busy since I missed some time. I went through this again and resolved what I think is what you want. Please review again please.

[AdrianAcala]

@sobolevn , this is ready for your review. Thanks so much!