feat: Introduce Cloud Support

[yash30201]

For more info, see b/280092087

PiperOrigin-RevId: 527954020

[snippet-bot]

Here is the summary of changes.

You are about to add 11 region tags.

• Support/samples/V2/CaseAttachmentServiceClient/list_attachments.php:25, tag cloudsupport_v2_generated_CaseAttachmentService_ListAttachments_sync
• Support/samples/V2/CaseServiceClient/close_case.php:25, tag cloudsupport_v2_generated_CaseService_CloseCase_sync
• Support/samples/V2/CaseServiceClient/create_case.php:25, tag cloudsupport_v2_generated_CaseService_CreateCase_sync
• Support/samples/V2/CaseServiceClient/escalate_case.php:25, tag cloudsupport_v2_generated_CaseService_EscalateCase_sync
• Support/samples/V2/CaseServiceClient/get_case.php:25, tag cloudsupport_v2_generated_CaseService_GetCase_sync
• Support/samples/V2/CaseServiceClient/list_cases.php:25, tag cloudsupport_v2_generated_CaseService_ListCases_sync
• Support/samples/V2/CaseServiceClient/search_case_classifications.php:25, tag cloudsupport_v2_generated_CaseService_SearchCaseClassifications_sync
• Support/samples/V2/CaseServiceClient/search_cases.php:25, tag cloudsupport_v2_generated_CaseService_SearchCases_sync
• Support/samples/V2/CaseServiceClient/update_case.php:25, tag cloudsupport_v2_generated_CaseService_UpdateCase_sync
• Support/samples/V2/CommentServiceClient/create_comment.php:25, tag cloudsupport_v2_generated_CommentService_CreateComment_sync
• Support/samples/V2/CommentServiceClient/list_comments.php:25, tag cloudsupport_v2_generated_CommentService_ListComments_sync

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[bshaffer]

@yash30201 I think we should try to release this library as a V2 client only

Edit: see cl/528873101

[bshaffer]

@yash30201 this is ready to be rebuilt using the latest version of googleapis-gen (e.g. PiperOrigin-RevId: 529400435 or later)

[yash30201]

@bshaffer I regenerated this component according to the updated bazel [Build](https://github.com/googleapis/googleapis/blob/master/google/cloud/support/v2/BUILD.bazel) in the googleapis repo.

🤔 Then indentation of some doc blocs seems little different to me (For eg, this). We follow a different indentation in hand written client libraries.

[bshaffer]

@yash30201 that indentation looks correct to me. What indentation would you expect?

[yash30201]

@yash30201 that indentation looks correct to me. What indentation would you expect?

For example here, we indent next line from the start of the data type, instead of from the end of variable name.