Plugins + Scripts Custom Shader Loader

Bug fixes
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1. [Person Plugin Mode] fixed the issue the skin slots not showing up, introduced in previous update
2. [Person Plugin Mode] fixed issue where properties are not applied when skin slot is selected

Bug fix:

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Fixed an issue where the plugin did not wait for skin to load.

Special shout out to @TGC for bug report and help on testing fix.

Bug fix:
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1. [Person plugin mode] Fixed an issue where scene load restore didn't wait for all clothing items to load
2. [Person plugin mode] Fixed an issue where when selecting clothing after shader is selected, the shader properties are not applied.

Added debug logging support to help with diagnosis of potential bugs in the future because C# is hard and I am dumb

Spoiler: How to trigger debug logs

How to trigger debug logs:

1. rename the person/CUA atom to one of these names :

_debug_high
_debug_mid
_debug_low

Here high/mid/low means the verbosity of the logs the plugin will print. "High" means the logs will be most detailed.

2. Then load the plugin on the person or the clothing attached to the person.
3. reproduce the bug
4. disable or remove the plugin

Once the plugin is removed or disabled, it will save a log file under:

Custom\Scripts\Regguise\

Send me the log so I can look and hopefully rootcause the issue faster.

To turn off debug log, just rename the atom to anything else and reload the plugin

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New features:
1. Added trigger action for rescan clothing items and rescan CUA materials
2. Added detection when multiple instances of plugin is loaded on one person. Only the first plugin can replace skin shaders

Bug fixes:

1. Various fixes on restore preset actions upon scene loads
2. Fixed an issue where plugin loads will reset the render queue value.


Known issue:
Due to how clothingplugnmanager handles json restores, when a person atom has the plugin loaded, and simultaneously the person has a clothing item loaded the plugin as clothing plugin, the storeId of the scripts can collide and will cause issue when loading preset from clothingplugnmanager.

For now please avoid such use case, i.e. don't use the plugin both as person plugin and clothing plugin on the same person.

I will resolve this in coming updates by separating person plugin and clothing plugin code. Stay tuned.