splits m:b simulator state

sim/state/thermometer.ts

@@ -0,0 +1,18 @@
+namespace pxsim {
+    export class ThermometerState {
+        usesTemperature = false;
+        temperature = 21;
+
+    }
+}
+
+namespace pxsim.input {
+    export function temperature(): number {
+        let b = board();
+        if (!b.thermometerState.usesTemperature) {
+            b.thermometerState.usesTemperature = true;
+            runtime.queueDisplayUpdate();
+        }
+        return b.thermometerState.temperature;
+    }
+}