Change a bunch of shaders and GameHUD

[UrkiMimi]

Changes

• Note shader is completely different and requires a reflection probe instead of a cubemap.
• Wall shader has Depth Write on
• SaberBlade shader has screen displacement in the core.
• GameHUD font for the combo and multiplier uses Beon instead of Teko.

[AllPoland]

1: Why is this necessary? Is there anything wrong with the current shaders? 2: These changes were made in the wrong Unity version, making it incompatible with this repo. 3: Walls drawing to depth is not accurate to the game, and is overall not good practice for transparent objects. 4: Beon font hasn't been used in the game for a long time, no reason to add it to ArcViewer since Teko is accurate.

If you have an explanation for these issues, I'll reopen the PR, but for now I see no reason to merge this.