GitLab

**Description**
Collect realtime GPU power when benchmarking.

**Description**
Looks `grep cgroup /proc/filesystems` doesn't work for NDv4 whose cgroup
version is v1, but the result of this command got v2 for NDv4. Instead,
checking the file existence to judge the cgroup version.

**Description**
Since ubuntu 22.04 will use cgroup V2 and the file structure changed.
Modify the monitor to adapt to cgroup v1 and v2.

**Description**
Integrate monitor into Superbench.

**Major Revision**
- Initialize, start and stop monitor in SB executor.
- Parse the monitor data in SB runner and merge into benchmark results.
- Specify ReduceType for monitor metrics, such as MAX, MIN and LAST.
- Add monitor configs into config file.

**Description**
Add the initial version of Monitor.

**Major Revision**
- Add `Monitor` class to launch background process for monitoring.
- Add `MonitorRecord` class to save the data one time capturing.