Support filtering by multiple strategies in Management Connections API in Go SDK

Feature: Add support to Management Connections API to be able to filter by multiple strategies in Go SDK

Description: The Go SDK does not currently support filtering by multiple strategies.

Use-case: I want to retrieve a list of connections, but have the API only return the list of connections filtered by a subset of strategies.
The workaround today is to query for them all and do it in-memory, but would be great to defer this to the auth0 server to save on some logic.

More context here: Providing multiple strategies when retrieving Connection list

Thanks a bunch for adding the feedback request @nick18, always appreciated! :pray: