[REQUEST] Allow exporting objects as separate meshes

[ScoreUnder]

Use case

The user may want to move and rotate objects in the scene, e.g. cows in lumbridge or anything that exports incorrectly.

Solution

Make each object export as its own mesh to make them easier to move?

Originally posted by @ConnorDY in #90 (comment)

Perhaps we could add an option for the export style, i.e. split into files with correct xyz offsets, split into separate meshes, or just all at once like we have now

Alternatives

• could allow moving objects in preview instead?
• could allow the user to select an object in the preview to export separately, or to disable entirely before export

[ConnorDY]

I'm thinking this feature might be useful to move objects even if they are in the "correct" spots. It would allow people to animate scene objects more easily if they are part of their own meshes.

[ks-Ryan]

@ConnorDY - any progress? If I knew Kotlin I'd probably be of more use. Referencing RSPSi map editor, you could make checkboxes/radio buttons for object types that you'd like to view (10 is generally the most common).

For bridges and whatnot - z+1 would be useful if I wanted to turn off all other heights.