Add PR template

Author: CodeCasterX

.github/PULL_REQUEST_TEMPLATE.md

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+<!-- 
+如果您正在寻求帮助，请先在我们的 QQ 群、微信公众号（群）中进行交流。
+If you're looking for help, please check our QQ group, WeChat group.
+
+我们鼓励使用英文，如果不能直接使用，可以使用翻译软件，您仍旧可以保留中文原文。
+Please try to use English to describe your issue, or at least provide a snippet of English translation.
+
+请不要在没有创建 Issue 的情况下创建 Pull Request。
+Please do not create a Pull Request without creating an issue first.
+
+微小的变更（如错别字修复）不需要创建 Issue。
+Trivial changes like typos do not require a Github issue.
+-->
+
+## 🔗 相关问题 / Related Issue
+<!-- 请先创建 Issue 讨论，然后在这里链接 -->
+<!-- Please create an issue for discussion first, then link it here -->
+
+**Issue 链接 / Issue Link:** #
+
+- [ ] 我已经创建了相关 Issue 并进行了讨论 / I have created and discussed the related issue
+- [ ] 这是一个微小的修改（如错别字），不需要 Issue / This is a trivial change (like typo fix) that doesn't need an issue
+
+## 📋 变更类型 / Type of Change
+请删除不适用的选项 / Please delete options that are not relevant
+
+- [ ] 🐛 Bug 修复 / Bug fix (non-breaking change which fixes an issue)
+- [ ] ✨ 新功能 / New feature (non-breaking change which adds functionality)  
+- [ ] 💥 破坏性变更 / Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] 📚 文档更新 / Documentation update
+- [ ] 🔧 重构 / Refactoring (no functional changes)
+- [ ] ⚡ 性能优化 / Performance improvement
+- [ ] 🧹 代码清理 / Code cleanup
+
+## 📝 变更目的 / Purpose of the Change
+<!-- 详细描述这个变更的目的和必要性 -->
+<!-- Detailed description of the purpose and necessity of this change -->
+
+## 📋 主要变更 / Brief Changelog
+<!-- 列出主要的变更内容 -->
+<!-- List the main changes -->
+
+- 
+- 
+- 
+
+## 🧪 验证变更 / Verifying this Change
+<!-- 描述如何验证这个变更是正确的 -->
+<!-- Describe how to verify that this change is correct -->
+
+### 测试步骤 / Test Steps
+1. 
+2. 
+3. 
+
+### 测试覆盖 / Test Coverage
+- [ ] 我已经添加了单元测试 / I have added unit tests
+- [ ] 所有现有测试都通过 / All existing tests pass
+- [ ] 我已经进行了手动测试 / I have performed manual testing
+
+## 📸 截图 / Screenshots
+<!-- 如果适用，请添加截图来展示变更效果 -->
+<!-- If applicable, add screenshots to demonstrate the changes -->
+
+## ✅ 贡献者检查清单 / Contributor Checklist
+请确保你的 Pull Request 符合以下要求 / Please ensure your Pull Request meets the following requirements:
+
+**基本要求 / Basic Requirements:**
+- [ ] 确保有 GitHub Issue 对应这个变更（微小变更如错别字除外）/ Make sure there is a Github issue filed for the change (trivial changes like typos excluded)
+- [ ] 你的 Pull Request 只解决一个 Issue，没有包含其他不相关的变更 / Your PR addresses just this issue, without pulling in other changes - one PR resolves one issue
+- [ ] PR 中的每个 commit 都有有意义的主题行和描述 / Each commit in the PR has a meaningful subject line and body
+
+**代码质量 / Code Quality:**
+- [ ] 我的代码遵循项目的代码规范 / My code follows the project's coding standards
+- [ ] 我已经进行了自我代码审查 / I have performed a self-review of my code
+- [ ] 我已经为复杂的代码添加了必要的注释 / I have commented my code, particularly in hard-to-understand areas
+
+**测试要求 / Testing Requirements:**
+- [ ] 我已经编写了必要的单元测试来验证逻辑正确性 / I have written necessary unit-tests to verify the logic correction
+- [ ] 当存在跨模块依赖时，我尽量使用了 mock / I have used mocks when cross-module dependencies exist
+- [ ] 基础检查通过：`mvn -B clean package -Dmaven.test.skip=true` / Basic checks pass
+- [ ] 单元测试通过：`mvn clean install` / Unit tests pass
+
+**文档和兼容性 / Documentation and Compatibility:**
+- [ ] 我已经更新了相应的文档 / I have made corresponding changes to the documentation
+- [ ] 如果有破坏性变更，我已经在 PR 描述中详细说明 / If there are breaking changes, I have documented them in detail
+- [ ] 我已经考虑了向后兼容性 / I have considered backward compatibility
+
+## 📋 附加信息 / Additional Notes
+<!-- 任何其他相关信息，如已知问题、后续计划等 -->
+<!-- Any other relevant information, such as known issues, future plans, etc. -->
+
+---
+
+**审查者注意事项 / Reviewer Notes:**
+<!-- 为审查者提供的特殊说明或需要重点关注的地方 -->
+<!-- Special instructions for reviewers or areas that need special attention -->