Fix exception on close of IDE

[brusherru]

While some process that communicates through IPC using promifisyIpc and subscribeIpc modules is running it tries to send process/success/failure messages to the renderer from the main process. For example, installing arduino C++ libraries, arduino packages, upload to the board and etc.
So when User closes IDE while a process is running it causes exception, cause the main process can't send data to the renderer, that was destroyed.

Fortunately, electron developers added a method event.sender.isDestroyed(), so we can avoid sending data to the destroyed process. That I did in this PR and it fixes the bug.

How to reproduce the bug

1. Open previous IDE version.
2. Start installation of some arduino package.
3. Close the window before it's done.
4. You'll see an exception in the OS dialog window.

Then you can checkout this branch and repeat these steps to be sure it works fine :)

[nkrkv]

👌

[nkrkv]

Works fine on Linux. What I’ve noted also:

• I started the application with yarn start:electron
• I started installing the esp8266 package
• Shortly after the first archive started to download I closed the XOD IDE window
• The terminal process kept running for another 20 seconds or so, that is, it was not SIGTERM’d right away

I’m not sure is it OK or the same symptoms as on Windows.