Feature Request: Passing -P params to gradle

[NathanaelA]

When you build for android it calls gradlew, gradle has -Pxxx where xxx is a value to allow you to control what it builds; one item that would be very useful to be able to set is the supportVersion

I would like tns to support passing on something maybe something like --gradle "-PsupportVersion=yyyy -Pblah=zzz -Petc=aaa"

[vmutafov]

Perhaps this could be quite convenient to use: NativeScript/android#1463

[farfromrefug]

@NathanaelA A PR is created #5630