Switch to using approved Windmill Hub resource types

[rudokemper]

In addition to the documentation PR, I have created these resource types and alerted the Windmill team to them:

https://hub.windmill.dev/resource_types/193/kobotoolbox_account (already existed, but just pinged them about it)
https://hub.windmill.dev/resource_types/271/arcgis_account
https://hub.windmill.dev/resource_types/272/odk_config
https://hub.windmill.dev/resource_types/273/gfw_api
https://hub.windmill.dev/resource_types/274/twilio_message_template

Originally posted by @rudokemper in #130

Now that some of these have been approved, let's...

1. Delete the custom resource types in this repository
2. Modify the scripts to use the Windmill Hub resource types