Add APIs integration tests [CLI-96]

[Widcket]

Description

This PR adds integration tests for APIs and fixes two issues where the value of the scopes flag would be ignored.

Testing

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not master

[Widcket]

This can be handled in batches of 5 with

auth0 apis list --format json --no-input \
    | jq -r '.[] | select(.Name | startswith("integration-test-api-")) | "\(.Name) \(.ID)\n"' \
    | xargs -P 5 -n 2 bash -c 'echo Deleting $0 && auth0 apis delete $1 --force' 

[jfatta]

looks pretty neat 🧪 🚀