Add setResizeMode function

[jcesarmobile]

No description provided.

[kensodemann]

Feedback from a tester:

I can confirm that the fix is working - just one gotcha, once the mode is changed, this is permanent and it applies to the rest of the app - however, you can set the active mode back to "native" again on componentWillUnload to get around the issue.

I noticed that there is no implementation on Android and I still need to test the behavior on that end - is there a reason for this ? If you gave me some pointers I would be happy to look into the Java implementation to see if anything is possible.

That first bit makes sense to me, but I wanted to double check.

Wasn't sure on the reasons for the last one but was wondering if that is even supported by the Android API?