Split WASM and native versions, and move iced support code to native

src/mem.rs

@@ -1,10 +1,16 @@
 use std::{fmt, sync::Arc};
 
 use crate::{
-    CPUMMRegisters, PPU, apu::APU, controllers::Controllers, cpu::DmaState, hex_view::Memory,
+    CPUMMRegisters, PPU, apu::APU, controllers::Controllers, cpu::DmaState,
     ppu::PPUMMRegisters,
 };
 
+pub trait Memory {
+    fn peek(&self, val: usize) -> Option<u8>;
+    fn len(&self) -> usize;
+    fn edit_ver(&self) -> usize;
+}
+
 #[derive(Debug, Clone)]
 pub enum Value<R> {
     Value(u8),