feat: support io latency histogram

feat: support io latency histogram

1. set io latency histogram command:
sudo ./nvme memblaze lat-stats /dev/nvme0 -d
Successfully set enable bit for FID (0xE2) to 0.
sudo ./nvme memblaze lat-stats /dev/nvme0 -e
Successfully set enable bit for FID (0xE2) to 1.
2. print io latency read/write histogram command:
sudo ./nvme memblaze lat-stats-print /dev/nvme0
Memblaze IO Read Command Latency Histogram
Major Revision : 1
Minor Revision : 0
--------------------------------------------------
Bucket      Start       End         Value
--------------------------------------------------
0           0us         32us        1176
1           32us        64us        80869
2           64us        96us        86951
3           96us        128us       93147
sudo ./nvme memblaze lat-stats-print /dev/nvme0 -w
Memblaze IO write Command Latency Histogram
Major Revision : 1
Minor Revision : 0
--------------------------------------------------
Bucket      Start       End         Value
--------------------------------------------------
0           0us         32us        0
1           32us        64us        0
2           64us        96us        5
3           96us        128us       20
4           128us       160us       21
3. Complete test script

sudo ./nvme memblaze lat-stats /dev/nvme0n1 -d  # disable io latency tracking
sudo ./nvme memblaze lat-stats /dev/nvme0n1 -e  # enable io latency tracking
sudo fio -rw=randread -filename=/dev/nvme0n1 -size=1G -name="dingjian"  # read io
sudo fio -rw=randwrite -filename=/dev/nvme0n1 -size=1G -name="dingjian"  # write io
sudo ./nvme memblaze lat-stats-print /dev/nvme0n1  # get read io latency histogram
sudo ./nvme memblaze lat-stats-print /dev/nvme0n1 -w  # get write io latency histogram

Signed-off-by: dingjian <jian.ding@memblaze.com>