feat(Data Modeling): support usedFor=record on containers

[evertoncolling]

Description

This PR adds support for creating and querying records containers via the SDK.

• Widen ContainerApply.used_for and Container.used_for to also accept "record", aligning with the v1 API spec (UsedFor enum = node | edge | record | all). Exposes a new public ContainerUsedFor type alias.
• Add a used_for filter to containers.list() and containers(...) (iterate), forwarded as the usedFor query parameter on GET /models/containers. Accepts a single value or a sequence.

Checklist:

• Tests added/updated.
• Documentation updated. Documentation is generated from docstrings - these must be updated according to your change.
  If a new method has been added it should be referenced in cognite.rst in order to generate docs based on its docstring.
• The PR title follows the Conventional Commit spec.

[evertoncolling]

This one would close #2391 (which was based on v7)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.01%. Comparing base (4b38aa0) to head (bfe0ca8).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2621      +/-   ##
==========================================
- Coverage   93.05%   93.01%   -0.05%     
==========================================
  Files         486      486              
  Lines       49481    49519      +38     
==========================================
+ Hits        46047    46058      +11     
- Misses       3434     3461      +27     

Files with missing lines	Coverage Δ
cognite/client/_api/data_modeling/containers.py	98.14% <100.00%> (ø)
...gnite/client/_sync_api/data_modeling/containers.py	97.36% <ø> (ø)
...nite/client/data_classes/data_modeling/__init__.py	100.00% <ø> (ø)
...te/client/data_classes/data_modeling/containers.py	97.68% <100.00%> (+0.06%)	⬆️
...nit/test_api/test_data_modeling/test_containers.py	100.00% <100.00%> (ø)

... and 9 files with indirect coverage changes

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[gemini-code-assist]

Code Review

This pull request introduces the ability to filter containers by the 'used_for' attribute in the Data Modeling API. It adds a new 'ContainerUsedFor' type (supporting 'node', 'edge', 'record', and 'all'), updates the 'list' and 'call' methods in both async and sync container APIs to accept this filter, and includes corresponding unit tests. I have no feedback to provide.