Read ext4 inode information

Signed-off-by: Prashant Shah <pshah.me@gmail.com>
Add MIT License notice

Signed-off-by: Prashant Shah <pshah.me@gmail.com>
Add LICENSE.txt and README.txt to QT Project file

Signed-off-by: Prashant Shah <pshah.me@gmail.com>
Add readFile() and readDirectory() declaration to ext4.h

Signed-off-by: Prashant Shah <pshah.me@gmail.com>