fix(cli): Allow to filter incompatible plugins per platform

[jcesarmobile]

and add cordova-plugin-googlemaps as iOS incompatible only.

[wf9a5m75]

abusing?

[jcesarmobile]

???
The plugin causes build failures on iOS, this allow people to still use it on Android

If you have made it compatible let us know and we will remove it from the list

[wf9a5m75]

At least, you should list here, not just blocking secretly.
Nobody can not found until inspecting the code.

https://github.com/ionic-team/capacitor/blob/29087ec682c29184efa2d25037cdf542d7c259ac/site/docs-md/cordova/known-incompatible-plugins.md

[jcesarmobile]

When you run update command it tells you the plugin is incompatible, so it’s not a secret. But yeah, I’ll add it to the list

[jcesarmobile]

documented on #2072