Remove unsafe code and clean up the code base in general (#1263)

* Remove unsafe code

* Make node graph test syncronous

* Add miri step to ci

* Remove unsafe from node graph evaluation

* Replace operation pseudo_hash with hash based on discriminant

* Fix test

* Move memo module to core and make it safe

* Fix formatting

* Remove unused stuff from gstd

* Use safe casting for creating key variants

* Fix memo node types

* Fix ref node

* "fix" ub

* Use correct input types for ExtractImageFrame

* Fix types for async nodes

* Fix missing implementation

* Manually override output type for async nodes

* Fix types for EditorApi

* Fix output type for WasmSurfaceHandle

* Remove unused miri.yml

* Fix incorrect type for cache node

editor/src/messages/input_mapper/input_mapper_message_handler.rs

@@ -37,9 +37,9 @@ impl InputMapperMessageHandler {
 			.filter_map(|(i, m)| {
 				let ma = m.0.iter().find_map(|m| actions.find_map(|a| (a == m.action.to_discriminant()).then(|| m.action.to_discriminant())));
 
-				ma.map(|a| unsafe { (std::mem::transmute_copy::<usize, Key>(&i), a) })
+				ma.map(|a| ((i as u8).try_into().unwrap(), a))
 			})
-			.for_each(|(k, a)| {
+			.for_each(|(k, a): (Key, _)| {
 				let _ = write!(output, "{}: {}, ", k.to_discriminant().local_name(), a.local_name().split('.').last().unwrap());
 			});
 		output.replace("Key", "")
@@ -72,7 +72,7 @@ impl InputMapperMessageHandler {
 							"Attempting to convert a Key with enum index {}, which is larger than the number of Key enums",
 							i
 						);
-						unsafe { std::mem::transmute_copy::<usize, Key>(&i) }
+						(i as u8).try_into().unwrap()
 					})
 					.collect::<Vec<_>>();
 

editor/src/messages/input_mapper/utility_types/input_keyboard.rs

@@ -50,7 +50,8 @@ bitflags! {
 // (although we ignore the shift key, so the user doesn't have to press `Ctrl Shift +` on a US keyboard), even if the keyboard layout
 // is for a different locale where the `+` key is somewhere entirely different, shifted or not. This would then also work for numpad `+`.
 #[impl_message(Message, InputMapperMessage, KeyDown)]
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Deserialize, Serialize, specta::Type)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Deserialize, Serialize, specta::Type, num_enum::TryFromPrimitive)]
+#[repr(u8)]
 pub enum Key {
 	// Writing system keys
 	Digit0,