Added Chinese version

Added Chinese version

zh-CN/.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

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+<!-- Thank you for contributing! -->
+
+### Description
+
+<!-- Please insert your description here and provide especially info about the "what" this PR is solving -->
+
+### Additional context
+
+<!-- e.g. is there anything you'd like reviewers to focus on? -->
+
+---
+
+### What is the purpose of this pull request? <!-- (put an "X" next to an item) -->
+
+- [ ] Bug fix
+- [ ] New Feature
+- [ ] Documentation update
+- [ ] Other
+
+### Before submitting the PR, please make sure you do the following
+
+- [ ] Submit the PR against the `dev` branch.
+- [ ] Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
+- [ ] Provide a description in this PR that addresses **what** the PR is solving, or reference the issue that it solves (e.g. `fixes #123`).
+- [ ] Ideally, include relevant tests that fail without this PR but pass with it.