WPC-Emu cleanup round

[neophob]

#124 was about a first working WPC-Emu integration. there are some issues I want to address here:

DONE

• use module.exports for wpc-emu lib, today the facade use the modules export. reason: some unit tests fail running in node
• check architecture about the wpc-emu, its caching mechanism - maybe use a proxy?

PENDING

• use run function to start the emulator, use stop function to stop the emulator

[neophob]

There's is another issue - in the test menu, there is a ALL LAMP test menu item, where all lamps flash - ChangedLamps returns this data:

changedLamps
0: (2) [81, 1]
1: (2) [82, 1]
2: (2) [83, 1]
3: (2) [84, 1]
4: (2) [85, 1]
5: (2) [86, 1]
6: (2) [87, 1]
7: (2) [88, 1]

As the VBS code has not all 64 lamps available, this crashes the VBS code:

Uncaught TypeError: Cannot set property 'State' of undefined
    at TimerApi.eval (tablescript.js:39)
    at TimerApi.emit (events.js:146)
    at EventProxy.fireDispID (event-proxy.js:52)
    at EventProxy.fireGroupEvent (event-proxy.js:46)
    at PlayerPhysics.updatePhysics (player-physics.js:307)
    at Player.updatePhysics (player.js:84)
    at player.worker.js:61

Here is tablescript.js

    __items.PinMAMETimer.on('Timer', () => {
        let ChgLamp, ii, tmp, idx;
        ChgLamp = __vbsHelper.getOrCall(__vbsHelper.getOrCall(__scope.Controller).ChangedLamps);
        if (!__stdlib.IsEmpty(ChgLamp)) {
            for (ii = 0; ii <= __stdlib.UBound(ChgLamp); ii += 1) {
                idx = __vbsHelper.getOrCall(ChgLamp, ii, 0);
                __vbsHelper.getOrCall(__scope.Lights, idx).State = __vbsHelper.getOrCall(ChgLamp, ii, 1);  << BOOM
            }
        }

Goal is that EMU Test "T.10" works

Should be fixed when #141 is implemented

[neophob]

start/stop/pause is not needed, cleanup round is made, the vbs error will be handled with #141, that means nothing left to do here