Currently cgroup2 systemd implementation does not set CPUQuotaPeriodUSec property.

Similar support was added into runc's cgroup implementation:

• systemd drivers do not set CPUQuotaPeriodUSec opencontainers/runc#2465
• cgroups/systemd: add setting CPUQuotaPeriod prop opencontainers/runc#2466

Shall we replicate the same logic in this package?