VolatileViews with Invalidate

[hanslovsky]

This PR exposes the Invalidate interface of the volatile cache when wrapping a RandomAccessibleInterval with VolatileViews.wrapAsVolatile as discussed on gitter:

1. Refactor VolatileViews.createVolatileCachedCellImg to VolatileViews.createVolatileCache to get access to cache
2. Have VolatileViewData implement Invalidate<Long> to expose the volatile cache's Invalidate.

• Delegate to invalidate that is passed in constructor
• This could possibly be Invalidate<K>, but would add generic parameter

3. Have VolatileRandomAccessibleIntervalView implement Invalidate<Long>

• Makes it easy to check downstream, just check for rai instanceof Invalidate<?>
• Could be useful for CachedCellImg as well for the same reason.

This should probably bye squashed into a single commit upon merge.