heif(heic) file reader, use java se. Currently just implements image meta reader.
Include width height rotation and bit depth of colour.
Support mif1 and heic brand.
this program just read ftyp and meta box, so it is quick for only meta purpose.
thanks yoh(/~https://github.com/yohhoy/heifreader), Monostream(/~https://github.com/monostream/tifig)
use pure java to read image data and decode.