fix: Bepu, ensure users require an explicit reference to bepu before being able to use related components and assets

[Eideren]

PR Details

See title, most of the changes were in removing references to it from editor assemblies.
The template assembly has an ugly workaround for now because they aren't quite ready to be implemented plugin-side. So a bit of reflection to ensure we can create hulls from the editor.

Related Issue

None reported on github

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.