add pr

.github/pull_request_template.md

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+# pull request
+
+- Describe the changes you made to the project.
+
+## Checklist
+
+- [ ] Ensure that the code has passed all tests.
+- [ ] The PR description is clear and complete.
+- [ ] All relevant documentation has been updated.
+
+## Submission Type
+
+- [ ] New language support
+- [ ] Bug fix
+- [ ] Other
+
+### New Language Support
+
+If you are submitting new language support, please first refer to the documentation [Language Support](https://github.com/zizdlp/zbook-docs/blob/main/Development/LanguageSupport.md) and follow the necessary procedures.