Auth0 client refresh token

[rienafairefr]

Proposed Changes

/moved from the terraform-providers/terraform-provider-auth0 repo
This adds support for the refresh_token field on clients

Fixes #19

Acceptance Test Output

$ make testacc TESTS=TestAccClient.*
==> Checking that code complies with gofmt requirements...
?   	github.com/terraform-providers/terraform-provider-auth0	[no test files]
=== RUN   TestAccClientGrant
--- PASS: TestAccClientGrant (22.34s)
=== RUN   TestAccClient
--- PASS: TestAccClient (7.24s)
=== RUN   TestAccClientZeroValueCheck
--- PASS: TestAccClientZeroValueCheck (8.34s)
=== RUN   TestAccClientRotateSecret
--- PASS: TestAccClientRotateSecret (1.79s)
=== RUN   TestAccClientInitiateLoginUri
--- PASS: TestAccClientInitiateLoginUri (0.02s)
=== RUN   TestAccClientJwtScopes
--- PASS: TestAccClientJwtScopes (7.82s)
PASS
coverage: 26.0% of statements
ok  	github.com/terraform-providers/terraform-provider-auth0/auth0	47.560s	coverage: 26.0% of statements
?   	github.com/terraform-providers/terraform-provider-auth0/auth0/internal/debug	[no test files]
testing: warning: no tests to run
PASS
coverage: 0.0% of statements
ok  	github.com/terraform-providers/terraform-provider-auth0/auth0/internal/random	0.009s	coverage: 0.0% of statements [no tests to run]
testing: warning: no tests to run
PASS
coverage: 0.0% of statements
ok  	github.com/terraform-providers/terraform-provider-auth0/auth0/internal/validation	0.001s	coverage: 0.0% of statements [no tests to run]
?   	github.com/terraform-providers/terraform-provider-auth0/version	[no test files]

Community Note

• Please vote on this pull request by adding a 👍 reaction to the original pull request comment to help the community and maintainers prioritize this request
• Please do not leave "+1" comments, they generate extra noise for pull request followers and do not help prioritize the request

[rienafairefr]

@alexkappa moved the PR here.
Re: The oidc_conformant issue, it's apparently necessary to put that for the refresh token rotation to be acceptable by auth0

[alexkappa]

Thank you @rienafairefr!