Render custom skin boxes on viewmodel

[BotchGit]

Description

This PR fixes the custom skin boxes not being rendered on the viewmodel.

Changes

The custom skin boxes now correctly render with the viewmodel.

Previous Behavior

Previously the custom skin boxes did not render, which wasn't a huge issue unless you were using a model that replaces the default arm with a custom box while hiding the original arm with an anim bitmask. In this screenshot you can see what the sackboy skin looks like in first person mode right now.

Root Cause

Game just wasn't rendering the boxes with the viewmodel as it should and does in official console versions of the game.

New Behavior

Here, you can see that the game now properly renders the custom skin boxes with the viewmodel.

Fix Implementation

Loop through children of arm0 and see if they match the ModelParts that are for the current skin, if they do render them with the viewmodel.

AI Use Disclosure

None

Related Issues

• Related to [Bug] You can't see your hand in first person if you use some of the LBP skins #1185
• Vaguely related to a comment made in [Suggestion] Little Big Planet Mashup pack (LBP) #1210

[BotchGit]

DO NOT MERGE YET!!!

somehow missed a bug last night where selecting a skin with no boxes at all will crash the game.
fixing asap

[BotchGit]

Ok newest commit should fix 👍

[sylvessa]

will merge when workflow succeeds