Ext Sim Event Option

[pressr-inl]

Add option to get different types of external simulation events.

For the JSON this is what it should look like
{
"Event": {
"id": 26,
"name": "AvtSimDone",
"desc": "",
"mainItem": false,
"evType": "et3dSimEv",
"extEventType": "etCompEv", //options [etCompEv, etEndSim, etStatus]
"allItems": true,
"triggerStates": [],
"moveFromCurrent": false,
"varNames": [], //null or empty if not etCompEv
"variable": "Ext_AvtDone", //null or empty if not etCompEv
"code": "return Ext_AvtDone;" //null or empty if not etCompEv
}
},

[pressr-inl]

Add the following text to the right side of combo when they select the combo item.
Variable Change - Trigger event when the external variable changes and the code condition is met.
Simulation End - Trigger event when the external simulation has ended.
Error Status - Trigger event if the external simulation has sent a error status.