ShaderGraph add ToolsWireframe and ToolsShadingComplexity modes
Fixes sboxgame/issues/issues/4104
ShaderGraph add Camera node with position, direction, near/far plane
https://files.facepunch.com/matt/1b1111b1/sbox-dev_0SbvbXMF1c.png
Fixes sboxgame/issues/issues/3996