fix:Can't put a space in app name #4055

[dvansari65]

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Summarize your changes:
I wrapped app name and app path in double quote, this avoids macOS treating spaces as argument separators during

[MarshallOfSound]

Did you dive into where this is happening inside electron-installer-dmg? I traced the code just now and it looks like everything is using args not string concatenation so spaces shouldn't matter.

We also build an app internally called Foo Bar.app which correctly builds as Foo Bar.dmg without error. Can you provide a repro for this?

[nikwen]

Could you please fill out the issue template?

I also have spaces in my app name and it works fine. There was #4055 which reported that it didn't work, but we haven't heard back from the reporter.