feat: add latest attribute

[34j]

Description of change

Pull-Request Checklist

• Code is up-to-date with the main branch
• This pull request follows the contributing guidelines.
• This pull request links relevant issues as Fixes #0000
• There are new or updated unit tests validating the change
• Documentation has been updated to reflect this change
• The new commits follow conventions outlined in the conventional commit spec, such as "fix(api): prevent racing of requests".

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[Copilot]

Pull request overview

This PR introduces a latest module alias that points to the most recent array API version (_2024_12), allowing users to import from array_api.latest instead of version-specific modules like array_api._2024_12. This provides a convenient way to use the most current API without needing to update import statements when new versions are released.

Key changes:

• Added latest module alias in src/array_api/__init__.py pointing to _2024_12
• Updated all documentation examples to use array_api.latest instead of version-specific imports
• Enhanced sphinx documentation configuration with --separate flag for better module documentation organization

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/array_api/__init__.py	Adds latest as a module alias for _2024_12 and exports it in __all__
tests/test_main.py	Updates test imports to use array_api.latest instead of array_api._2024_12
src/array_api_compat/__init__.pyi	Updates type stub imports to use array_api.latest
README.md	Updates all code examples to demonstrate the new latest import pattern
docs/conf.py	Adds --separate flag to sphinx-apidoc for generating separate documentation files per module

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 21.01%. Comparing base (07c726f) to head (241d8ad).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #161      +/-   ##
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+ Coverage   21.00%   21.01%   +0.01%     
==========================================
  Files           9       10       +1     
  Lines        4890     4891       +1     
  Branches      709      709              
==========================================
+ Hits         1027     1028       +1     
  Misses       3690     3690              
  Partials      173      173              

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