Restructure node graph execution to be safer (#1277)

* Reorganize file structure

* Remove all unsafe code

* Add testcase for debugging ub

* Convert into proper test with fail condition

* General cleanup

* Fix tests

* Add feature guard for deallocation

* Use raw pointer for storing values to avoid violating aliasing rules

* Add comment explaining the disabling of simd128

* Fix brush node

* Fix formatting

node-graph/graph-craft/src/lib.rs

@@ -8,5 +8,5 @@ pub use graphene_core::{concrete, generic, NodeIdentifier, Type, TypeDescriptor}
 pub mod document;
 pub mod proto;
 
-pub mod executor;
+pub mod graphene_compiler;
 pub mod imaginate_input;