Implement the Brush tool (#1099)

* Implement Brush Node

* Add color Input

* Add VectorPointsNode

* Add Erase Node

* Adapt compilation infrastructure to allow non Image Frame inputs

* Remove debug output from TransformNode

* Fix transform calculation

* Fix Blending by making the brush texture use associated alpha

* Code improvements and UX polish

* Rename Opacity to Flow

* Add erase option to brush node + fix freehand tool

* Fix crash

* Revert erase implementation

* Fix flattening id calculation

* Fix some transformation issues

* Fix changing the pivot location

* Fix vector data modify bounds

* Minor fn name cleanup

* Fix some tests

* Fix tests

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>
Co-authored-by: hypercube <0hypercube@gmail.com>

node-graph/gcore/src/lib.rs

@@ -60,7 +60,7 @@ where
 		core::any::type_name::<Self::Output>()
 	}
 	#[cfg(feature = "alloc")]
-	fn to_node_io(&self, parameters: Vec<(Type, Type)>) -> NodeIOTypes {
+	fn to_node_io(&self, parameters: Vec<Type>) -> NodeIOTypes {
 		NodeIOTypes {
 			input: concrete!(<Input as StaticType>::Static),
 			output: concrete!(<Self::Output as StaticType>::Static),