[Feature]Add Ascend NPU support

[xuuyangg]

Motivation

Add Ascend NPU support for mmeval.

Modification

I added a new distributed backend and its corresponding test code.

Use cases (Optional)

check out the examples.

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
3. If the modification has potential influence on downstream projects, this PR should be tested with downstream projects, like MMDet or MMCls.
4. The documentation has been modified accordingly, like docstring or example tutorials.

[CLAassistant]

All committers have signed the CLA.