[proposal] Support EulerOS

[fengyehong]

What is your proposal:
Support EulerOS

Why is this needed:

EulerOS also has cgroup features like cpu.qos_level memory.qos_level to get different qos for different workloads, and it's open-sourced.

AnolisOS is not always available. If koordinator supports more OS(AnolisOS, EulerOS, TencentOS, ...), it can be more widely adopted.

Is there a suggested solution, if so, please add it:

[zwzhang0107]

sounds good.
contribution is welcomed if you have any interest.

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