Support for semantic version prerelease version format

I recently came across an interesting issue where I was building an app with electron-forge and uploading it to nucleus when the nucleus server rejected a file saying that it could not find the version in the file.

This build was from a prerelease version which means that the version format was like `app.org-1.0.0-beta.3`

So I had two files that I was uploading:

```
app.org-1.0.0-beta.3 Setup.exe
app.org-1.0.0-beta3-full.nupkg
```

Now this is interesting because I'm guessing that the reason is to support the required nuget package without running into this issue: https://github.com/Squirrel/Squirrel.Windows/issues/523

However this version structure of `1.0.0-beta.3` is the semantic version standard for prereleases.

Here is the line that I believe is reformatting the version.
https://github.com/electron/windows-installer/blob/1350a1695e3e8a57ed742e3034ee144d32feb64d/src/index.ts#L18

I was wondering if this is something that's absolutely necessary or if it's possible to support the prerelease formatting.

Any advice or help would be greatly appreciated.