Nodes: Add Float Curve for GN and Shader nodes.

Replacement for float curve in legacy Attribute Curve Map node.

Float Curve defaults to [0.0-1.0] range.

Reviewed By: JacquesLucke, brecht

Differential Revision: https://developer.blender.org/D12683

release/scripts/startup/nodeitems_builtins.py

@@ -279,6 +279,7 @@ shader_node_categories = [
     ]),
     ShaderNodeCategory("SH_NEW_CONVERTOR", "Converter", items=[
         NodeItem("ShaderNodeMapRange"),
+        NodeItem("ShaderNodeFloatCurve"),
         NodeItem("ShaderNodeClamp"),
         NodeItem("ShaderNodeMath"),
         NodeItem("ShaderNodeValToRGB"),
@@ -615,6 +616,7 @@ geometry_node_categories = [
     ]),
     GeometryNodeCategory("GEO_UTILITIES", "Utilities", items=[
         NodeItem("ShaderNodeMapRange"),
+        NodeItem("ShaderNodeFloatCurve"),
         NodeItem("ShaderNodeClamp"),
         NodeItem("ShaderNodeMath"),
         NodeItem("FunctionNodeBooleanMath"),