[Doc] Translate the doc of Uniformer V1&V2 into Chinese

[SCZwangxiao]

Motivation

Translate the documents of Uniformer V1&V2 into Chinese.

Modification

add configs/recognition/uniformer/README_zh-CN.md
add configs/recognition/uniformerv2/README_zh-CN.md

Checklist

1. Pre-commit or other linting tools should be used to fix the potential lint issues.
2. The modification should be covered by complete unit tests. If not, please add more unit tests 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 should be modified accordingly, like docstring or example tutorials.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a9a0957) 76.25% compared to head (c993dcd) 76.25%.
Report is 5 commits behind head on main.

❗ Current head c993dcd differs from pull request most recent head cd8a245. Consider uploading reports for the commit cd8a245 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2592   +/-   ##
=======================================
  Coverage   76.25%   76.25%           
=======================================
  Files         170      170           
  Lines       13904    13904           
  Branches     2375     2375           
=======================================
  Hits        10603    10603           
  Misses       2732     2732           
  Partials      569      569           

Flag	Coverage Δ
unittests	76.25% <ø> (ø)

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