readBigTiff - read TIFF stacks >4GB (fixed for ImageJ Tiff)

enable read Tiff stacks > 4GB, return matrix. works with uint8,16,32

This is another similar implementation to read Tiff files > 4GB.

I give credit to the imread_big project, this code is a simplified and debugged version of imread_big, and specifically handles grayscale tiff stacks in uint8,16,32. feel free to adopt for any of your purposes.

This code addresses common bugs found in various online sources:

1. fixed total frame indexing errors
2. when imageJ saves Tiff, it uses big-endian, this is necessary to specify or the read image has weird artifacts.
3. there's often a off-by-1 error introduced in many versions of online code when indexing file position, this also caused image artifacts, corrected.

This code has been tested for different sizes of tiff files produced by ImageJ and should work well.