Blender v4.0 nodes

[BrendanParmer]

Features

• Geometry Node trees now set geometry type and editor modes for Tool groups
• Variable name generation is now more robust, checking if a variable is a Python keyword or is otherwise invalid (e.g starting with a digit like the 3D cursor node's default variable)
• Repeat zones are now supported
• Zone logic is now dependent on the Blender version
• Added new Geometry Nodes and attributes to settings, including
  • New tool nodes (GeometryNodeTool3DCursor, GeometryNodeToolSelection, GeometryNodeToolSetSelection, GeometryNodeToolFaceSet, GeometryNodeToolSetFaceSet)
  • Added domain attribute to GeometryNodeSetShadeSmooth
  • Added GeometryNodeInputEdgeSmooth, GeometryNodePointsToCurves
  • Repeat zone nodes (GeometryNodeRepeatInput, GeometryNodeRepeatOutput)
  • Rotation nodes (FunctionNodeAxisAngleToRotation, FunctionNodeEulerToRotation, FunctionNodeInvertRotation, FunctionNodeRotateVector, FunctionNodeRotationToAxisAngle, FunctionNodeRotationToEuler, FunctionNodeRotationToQuaternion, FunctionNodeQuaternionToRotation)
• Updated shader node settings
  • Added model attribute to ShaderNodeBsdfHairPrincipled
  • Added ShaderNodeBsdfSheen
  • Added normalize attribute to ShaderNodeTexNoise and ShaderNodeTexVoronoi
• Updated compositor node settings
  • Reorganized settings list to be in line with Blender 4.0's add menu organization
  • Added CompositorNodeKuwahara
• Added Node Panels
  • Refactored node tree io logic for Blender v4+
• Added general node settings (NodeFrame, NodeGroupInput, NodeGroupOutput, NodeReroute)
• Some print statements have been converted to Blender's operator reporting system, making them visible in the UI
• Fix issue with not using generated node tree in group node if already in the blend file (Group nodes don't use correct tree if one already present in scene #74)
  • NodeToPython now scans the node tree to see what dependencies exist and what node trees need processed first
• Add an array_to_py_str() method for bpy_prop_array
• Refactor "outermost group" logic to just store the base node tree we're converting to Python
• Functions arguments have been simplified a bit, no more passing around lots of unnecessary variable names and indentation info
• Group nodes are no longer special, setting their node trees just like other node settings

[BrendanParmer]

Group nodes and nodes with attributes that have been deprecated generate incorrect warnings

[BrendanParmer]

Not sure if this type is necessary any longer, at least in the general case. I like what the Geometry Node Tree does with it, but with the node_tree_vars dictionary I don't think it's probably necessary for Shader and Compositing nodes.

[BrendanParmer]

Group nodes and nodes with attributes that have been deprecated generate incorrect warnings

Will solve as part of #81

[BrendanParmer]

4.0 looks good
TODO: spot check with 3.3 and 3.6 LTS