Add Electron Support

[erisu]

Platforms affected

none

Motivation and Context

Add Support to Build for Electron

Description

• Added Electron path to package.json
• Added Electron compile to Gruntfile.js

Testing

• npm t

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[knight9999]

This is necessary update.
Fine.