Improve content type syncing

[philipbushnell-valtech]

Currently content type syncing requires an id but:

1. This id isn't a value that is exported (understandable from a cross-environment perspective) and although it can be retrieved from the Dynamic Content url, it would be nicer to allow it to also work with schemaId, like other parts of the cli.
2. There isn't an option to sync all content types, which would be really useful when ensuring your environment is up-to-date for example.