Generate declarations for event handling

[zspitz]

Depends on http://stackoverflow.com/questions/41713117/event-handlers-on-automation-objects-in-an-hta-using-javascript

Would require a custom library function (like this) that does the following:

• If currently in WScript, use ConnectObject
• If in an HTA, perhaps eval combined with object::eventName

[zspitz]

Adds overloads for the aforementioned library. Fixed by https://github.com/zspitz/ts-activex-gen/commit/c56e95dfcc9f09c7965c0043d75f404a3532e407.