Add phone components

Add mocks

src/Components/Phone/display-device-state.tsx

@@ -0,0 +1,11 @@
+import React from 'react';
+import { DeviceState } from '../../Hooks/voice-state';
+
+export default function DisplayDeviceState({deviceState}: {deviceState: DeviceState})
+{
+	return(
+		<div>
+			Device is currently {deviceState}.
+		</div>
+	);
+}