🏷️ Mark the TemporaryBlobFileOptions obsolete, as it does not provide enough reason to live

[stijnmoreels]

Is your feature request related to a problem? Please describe.
When dealing with existing/non-existing blob files in an Azure Blob storage container, the container test fixture provides options to control very specific files during setup/teardown. The additional options on the file test fixture do not bring much added value that can't already be done with the container test fixture options.

Describe the solution you'd like
Deprecate the TemporaryBlobFileOptions as it does not provide enough additional value; furthermore: similar fixtures like MongoDb documents, NoSql items and Table entities also do not have specific options, so removing the blob file options also streamlines these test fixtures.