it should be possible to scale lodNode distances based on camera FOV (patch included)

[Josh Enes]

This patch adds the ability to scale the distances set on lodNodes per-camera.
This allows for a developer to adjust all LOD distances with one setting for example to have a user-defined LOD config option.
It also allows to push back the LOD distances when the FOV of the camera is changed for example if the game has a sniper scope or binoculars this will allow the developer to avoid having the low-detail models shown even though they are very large on the screen.
The added function is set_lod_scale/setLodScale (and get) on cameras.

[Josh Enes (joshenes)]

Is there something I can do to improve this patch to make it more acceptable to be committed? I feel that this is a useful and needed feature for Panda.

[rdb (rdb)]

Hi! This looks like a useful feature. Thanks, I've committed it.