Makerworld warn if publishing exclusive model

[spuder]

Makerworld has quite strict rules about their exclusive models.

Its very likely a user will accidentally push/pull a model to/from makerworld and not realize they've made it exclusive.

The consequences could be a revocation of points and ban for that user.

Suggestion

Create a clear warning to users that if they sync a makerworld model to another repository, that they must uncheck the 'exclusive' tag.

[jklewa]

A clear warning about their exclusively program makes sense to me.

Currently we don't pull anything from MakerWorld, but if/when we do it's probably wise to exclude exclusive models.

Models that are published/synced using PubMan will be set as non-exclusive (api call has exclusive: false in it).

[jklewa]

Pulling designs from MakerWorld was introduced by #67 as of 2025.12.1-alpha.
Special handling of exclusive models is still required