Onboard Network Edge to this SDK

[ctreatma]

Network Edge currently has a hand-written Go SDK that does not support the full Network Edge feature set. To streamline customer experience and enable more complete usage of Network Edge, we should onboard that service to this SDK, using the OpenAPI spec from the Equinix API catalog.

Successful onboarding of Network Edge to this SDK should be demonstrated by converting at least one Network Edge Terraform resource from ne-go to equinix-sdk-go.