[New] VPC and Configuration Profile Interface endpoints (#858)

* Added VPC endpoints

* Fixed linting error

* Fix actions for Linode CLI

* Revisions and corrections based on feedback

* Added missing Beta designations

* Revise example text for SupportTicket description

* Added vpc_id property to SupportTicketRequest

* Additional changes related to VPC

* Clarify that any active interface (not just vpc) cannot be deleted in Configuration Profile Interface Delete endpoint

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Co-authored-by: Zhiwei Liang <zliang@akamai.com>
Co-authored-by: Matthew Wildman <matt@wildman.online>

Author: 3 people