Refactor MTMCClock frame handling, enhance emulator performance, integrate immediateTimeout, and optimize rendering logic for RegisterView, MemoryView, and BufferedImage.

src/jvmMain/kotlin/mtmc/util/PlatformSpecific.jvm.kt

@@ -4,3 +4,5 @@ actual fun currentTimeMillis(): Long = System.currentTimeMillis()
 actual fun requestAnimationFrame(action: (Double) -> Unit) {
   error("requestAnimationFrame is not supported on JVM")
 }
+
+actual fun immediateTimeout(action: (Double) -> Unit): Int {}