Restructure the entire editor codebase to consistently match the message hierarchy

Closes #744

editor/src/messages/message.rs

@@ -0,0 +1,60 @@
+use crate::messages::prelude::*;
+
+use graphite_proc_macros::*;
+
+use serde::{Deserialize, Serialize};
+use std::collections::hash_map::DefaultHasher;
+use std::hash::{Hash, Hasher};
+
+#[remain::sorted]
+#[impl_message]
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub enum Message {
+	#[remain::unsorted]
+	NoOp,
+	#[remain::unsorted]
+	Init,
+
+	#[child]
+	Broadcast(BroadcastMessage),
+	#[child]
+	Debug(DebugMessage),
+	#[child]
+	Dialog(DialogMessage),
+	#[child]
+	Frontend(FrontendMessage),
+	#[child]
+	InputMapper(InputMapperMessage),
+	#[child]
+	InputPreprocessor(InputPreprocessorMessage),
+	#[child]
+	Layout(LayoutMessage),
+	#[child]
+	Portfolio(PortfolioMessage),
+	#[child]
+	Tool(ToolMessage),
+	#[child]
+	Workspace(WorkspaceMessage),
+}
+
+impl Message {
+	/// Returns the byte representation of the message.
+	///
+	/// # Safety
+	/// This function reads from uninitialized memory!!!
+	/// Only use if you know what you are doing.
+	unsafe fn as_slice(&self) -> &[u8] {
+		core::slice::from_raw_parts(self as *const Message as *const u8, std::mem::size_of::<Message>())
+	}
+
+	/// Returns a pseudo hash that should uniquely identify the message.
+	/// This is needed because `Hash` is not implemented for `f64`s
+	///
+	/// # Safety
+	/// This function reads from uninitialized memory but the generated value should be fine.
+	pub fn pseudo_hash(&self) -> u64 {
+		let mut s = DefaultHasher::new();
+		unsafe { self.as_slice() }.hash(&mut s);
+		s.finish()
+	}
+}