Added RMB option to the Projection Camera in the UV Segmentation window

[Micheus]

This can be particularly useful for text-based texturing.

Note: The RMB option helps preserve the layout of UV islands as displayed in the viewer. Thanks to envelupo for the suggestion.

[Micheus]

The default LMB option was named in the code as 'arrange' mode:

and the RMB option is 'preserve':

[dgud]

I have let co-pilot review this, fix stuff that seems valid and write when your are done, or nothing needs fixing.
It is wrong often.

[Copilot]

Pull request overview

This PR adds a right mouse button (RMB) option to the Projection Camera feature in the UV Segmentation window, allowing users to choose between arranging UV islands (default behavior) or preserving their projection layout as seen in the viewer.

Key Changes:

• Modified the camera projection type from an atom to a tuple {camera, Mode} to support two modes: arrange and preserve
• Added UI menu option with RMB functionality for mode selection
• Implemented new place_areas/2 function with preserve mode logic

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
wpc_autouv.erl	Added new 5-arity init_show_maps function with UVMode parameter; exported both 4 and 5-arity versions
auv_util.erl	Added uv_mode/1 helper function to extract mode from camera tuple; updated exports
auv_seg_ui.erl	Added camera_mode/0 function for RMB menu handling; updated pattern matching for camera tuple; integrated mode selection in chart mapping workflow
auv_placement.erl	Implemented new place_areas/2 with preserve mode; added bbox/1 helper; defined HUGE/TINY constants for bounding box calculations
auv_mapping.erl	Updated pattern matching to handle {camera, _} tuple instead of camera atom

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