OX QEMU Implementation v2.0 - AppNVM FTL

This commit introduces AppNVM FTL.
OX Controller is now a hybrid controller (operates as open-channel SSD or as a block device). Check the README for details.

OX QEMU Implementation v1.1

Merge pull request #2 from DFC-OpenSource/ftl-ox-mq

OX Multi-queue timeout support + safe memory replacement

OX QEMU Implementation v1.0 + VOLT Volatile SSD

This release contains OX embedded in QEMU with a volatile storage Media Manager called VOLT.
The minimal functionality has been implemented.

VOLT is an initial project, it implements the NAND geometry but NOT implements a real flash simulation.