add file download, and file delete operations

[pkontek]

No description provided.

[Copilot]

Pull request overview

This PR adds file download and delete operations to the Dataverse client, expanding the existing file upload capabilities. The changes rename the file operations module to reflect its broader scope and implement two new methods for retrieving and removing files from Dataverse file columns.

Key Changes:

• Renamed _upload.py module to _file_operations.py to reflect expanded functionality
• Added download_file() method to retrieve files from Dataverse file columns
• Added delete_file() method to remove files from Dataverse file columns

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
src/PowerPlatform/Dataverse/data/_odata.py	Updated imports and class inheritance to use renamed _ODataFileOperations class
src/PowerPlatform/Dataverse/data/_file_operations.py	Renamed from _upload.py, added _download_file() and _delete_file() methods, updated class docstring
src/PowerPlatform/Dataverse/client.py	Added public download_file() and delete_file() methods with documentation

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[pkontek]

@microsoft-github-policy-service agree company="Solet sp. z o.o."

[pkontek]

Formatting issues reported by Black have been fixed.