Updated main to be wasm friendly.

Updated code to use an init, update, shutdown and should_run proc.
To get it ready to use wasm for the web build requires this structure.

src/main_desktop/main.odin

@@ -3,8 +3,8 @@ package main
 import "core:log"
 import "core:mem"
 
-import emu "machine"
+import emu "../machine"
-import sim "simulator"
+import sim "../simulator"
 
 DEV :: #config(DEV, false)
 
@@ -22,9 +22,22 @@ main :: proc() {
 
 	// Init the emu 8 "cpu"
 	system := emu.init()
+	s := sim.Simulator {
+		machine = &system,
+		rom_loaded = false,
+		paused = true,
+		step = false,
+		cpu_hz = 700,
+		disasm_follow = true,
+	}
 
-	// Initilize sim, gui etc
+	sim.init(&s)
-	sim.run_simulator(&system)
+
+	for sim.should_run() {
+		sim.update(&s)
+	}
+
+	sim.shutdown(&s)
 
 	when DEV {
 		if len(track.allocation_map) > 0 {