Minimal, complete, and verifiable checkbox needed in bug reports

[brody4hire]

Whenever someone raises an issue with a bug report, I think there should be a checkbox item such as:

• [ ] A minimal, complete, and verifiable example of the issue is included as described in https://stackoverflow.com/help/mcve

We may want to add a link to a more detailed description of what is needed. https://github.com/apache/cordova-contribute/pull/6 is an interesting start.