Add ability to specify additional user defined styles (Unity style sheets) for the Graph.
Motivation:
When you fill comment node text with Japanese characters, currently it shows the text with a font for Chinese. This font is not good for Japanese users. (Maybe it is simplified Chinese font named <edit>"Microsoft YaHei"</edit>. Maybe it is used as fallbacks of default font "Fonts/Lucida Grande.ttf".)
But if it specifies Japanese font, then it's not good for Chinese users. Most best way is handling language information with text as a rich text. But I think it's too much for this tool. Instead, if this tool has ability to specify font file, it's enough for most cases.
To achieve this, easier and generic way is specifying styles by users. So I suggest to support user defined styles.
(technically It's possible to solve it by modifying UdonGraphStyle.uss in SDK3. Of course, SDK modification is not allowed for user by TOS. Generally speaking, "technically possible things" sometimes spread out involuntarily. And it is bad educational thing for beginners, I think. So please provide us a legal way.)
version: VRCSDK-UDON-2020.06.09.16.32_Closed_Community_Test
--- Attached images
  1. Font value of Comment node Label is specified in Unity builtin default USS
  2. It seems to use fallbacks
  3. I manually change the font. Then font glyph becomes fine for Japanese