feat(storagecontrol): add managed folders samples

[cojenco]

Description

Fixes https://github.com/googleapis/python-storage/issues/1286

Checklist

• [x] I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• [x] Tests pass: nox -s py-3.10 (see Test Environment Setup)
• [x] Lint pass: nox -s lint (see Test Environment Setup)
• [x] Please merge this PR for me once it is approved

[snippet-bot[bot]]

Here is the summary of changes.

You are about to add 4 region tags.

- [storagecontrol/managed_folder_create.py:17](https://github.com/cojenco/python-docs-samples/blob/981d541a1af8b3abc7cee30db29e02e54150db96/storagecontrol/managed_folder_create.py#L17), tag `storage_control_managed_folder_create` - [storagecontrol/managed_folder_delete.py:17](https://github.com/cojenco/python-docs-samples/blob/981d541a1af8b3abc7cee30db29e02e54150db96/storagecontrol/managed_folder_delete.py#L17), tag `storage_control_managed_folder_delete` - [storagecontrol/managed_folder_get.py:17](https://github.com/cojenco/python-docs-samples/blob/981d541a1af8b3abc7cee30db29e02e54150db96/storagecontrol/managed_folder_get.py#L17), tag `storage_control_managed_folder_get` - [storagecontrol/managed_folder_list.py:17](https://github.com/cojenco/python-docs-samples/blob/981d541a1af8b3abc7cee30db29e02e54150db96/storagecontrol/managed_folder_list.py#L17), tag `storage_control_managed_folder_list`

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