Plugin support for breaking Cordova platform changes

Nice suggestion by @j3k0 in that it should be possible for plugins to support breaking platform changes.

Example by @j3k0, with edits by @brodybits:

```xml

```

Keep in mind that I think `version` attribute should mean Cordova platform framework, not Cordova framework version, Android OS version, Android SDK version, etc. ~~I wonder if we can think of a smarter attribute name such as "platform-engine-version" or "cordova-platform-version" to make this clear?~~

I think it should be possible to do this in a way that `cordova-common` would abstract this mechanism away from the Cordova platforms.

I also think that the need to deal with such breaking changes should be considered an exceptional and avoided whenever practical.

P.S. The alternative to specify Cordova dependencies as described in means that a plugin author would have to support multiple versions in multiple branches in order to deal with breaking changes.

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