Draft: streamify View API

[minnerbe]

As discussed with @tpietzsch, this is an attempt to create an API for View that's similar to Java streams. The goal would be to allow this kind of syntax:

Img<?> img = ...
Img<?> changedImg =  img.view()
		.translate(1, 2)
		.expandValue(new DoubleType(0), 1, 1)
		.permute(0, 1)
		.collect();

This is still work in progress. One particular limitation I encountered so far is that most methods in Views map RandomAccessibleInterval into RandomAccessible, i.e., they leave their domain, which makes daisy-chaining impossible.

[tpietzsch]

I made a variation with multiple ...View interfaces and wrappers in https://github.com/imglib/imglib2/tree/draft/streamify-views.

Usable like this:

imglib2/src/test/java/net/imglib2/streamifiedview/StreamifiedViewsExample.java

Lines 14 to 25 in 992e3e6

	RandomAccessibleInterval< IntType > img = ArrayImgs.ints( 100, 100 );
	RandomAccess< IntType > access = img.view()
	.extendBorder()
	.interpolate( new NLinearInterpolatorFactory<>() )
	.raster()
	.interval( img )
	.randomAccess();
	Cursor< IntType > cursor = img.view()
	.interval( img )
	.cursor();

[minnerbe]

I added a rough draft for converting a RaiView to an ArrayImg. I probably made some errors while trying to wrestle the generic type of the view into a NativeType, but it seems to work for a small test example.
What do you say, @tpietzsch?

[tpietzsch]

There is an update version of this PR in #364

[imagesc-bot]

This pull request has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/recent-and-upcoming-imglib2-improvements/96083/1