feat: New Queued resources Samples: Create, Create Spot, Get, Delete operations + tests

[Thoughtseize1]

Description

📑Created a full set of Queued Resources Samples:

Region Tag	File
tpu_queued_resources_create	queued_resources_create.py
tpu_queued_resources_network	queued_resources_create_network.py
tpu_queued_resources_create_spot	queued_resources_create_spot.py
tpu_queued_resources_startup_script	queued_resources_create_startup_script.py
tpu_queued_resources_time_bound	queued_resources_create_time_bound.py
tpu_queued_resources_get	queued_resources_get.py
tpu_queued_resources_list	queued_resources_list.py
tpu_queued_resource_delete	queued_resources_delete.py
tpu_queued_resources_delete_force	queued_resources_delete_force.py

❗Issue with Deleting operation in google.cloud.tpu_v2alpha1

The delete operation in queued_resources_delete.py have issue here with this
block of code.

    try:
        op = client.delete_queued_resource(request=request)
        op.result()
        print(f"Queued resource '{queued_resource_name}' successfully deleted.")
    except TypeError as e:
        print(f"Error deleting resource: {e}")
        print(f"Queued resource '{queued_resource_name}' successfully deleted.")

Issues Encountered:
Resource Successfully Deleted but we got TypeError: After invoking op.result() the resource is indeed successfully deleted. However, despite the deletion being successful, the function throws a TypeError: Could not convert Any to QueuedResource.
This error suggests that the API response could not be properly deserialized or converted into a QueuedResource object, even though the deletion itself completed as expected.

The code should not throw a TypeError when the resources are successfully deleted. We cannot avoid using op.result() because it guarantees that an Exception will be raised when attempting to delete a resource in a status where deletion is not possible. This behavior ensures proper error handling in situations where the resource cannot be deleted, but the current implementation incorrectly throws a TypeError even when deletion is successful.

This is precisely why I had to use two separate except blocks in the code.

Checklist

• I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• README is updated to include all relevant information
• Tests pass: nox -s py-3.9 (see Test Environment Setup)
• Lint pass: nox -s lint (see Test Environment Setup)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

You are about to add 9 region tags.

• tpu/queued_resources_create.py:27, tag tpu_queued_resources_create
• tpu/queued_resources_create_network.py:28, tag tpu_queued_resources_network
• tpu/queued_resources_create_spot.py:27, tag tpu_queued_resources_create_spot
• tpu/queued_resources_create_startup_script.py:27, tag tpu_queued_resources_startup_script
• tpu/queued_resources_create_time_bound.py:27, tag tpu_queued_resources_time_bound
• tpu/queued_resources_delete.py:20, tag tpu_queued_resource_delete
• tpu/queued_resources_delete_force.py:20, tag tpu_queued_resources_delete_force
• tpu/queued_resources_get.py:22, tag tpu_queued_resources_get
• tpu/queued_resources_list.py:20, tag tpu_queued_resources_list

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[m-strzelczyk]

I think in this case we can raise e, so we don't ignore proper issues.

[Thoughtseize1]

I simplified this code block.

[m-strzelczyk]

Maybe print the error, so it's easier to debug any potential issues.

[Thoughtseize1]

Done

[m-strzelczyk]

print

[Thoughtseize1]

Done

[m-strzelczyk]

Add some comment why you also delete TPU here, that it's liked to the queued resource etc.

[Thoughtseize1]

Added expanded comment