add release notes files for current version

Change-Id: I4153ed48f1242832e02bc73feb8022185924ab78

doc/release_notes_cn.md

@@ -0,0 +1,18 @@
+**新功能**
+1. 3D文字工具
+2. 对象和拷贝间的数据共享
+3. 参数表格
+4. 用户指南
+5. 支持Arachne特性
+
+**改进**
+1. 支持导出通用的3mf格式，兼容其他切片软件
+2. 优化混合支撑和树状支撑的生成速度
+3. 支持不停靠工具头的延迟摄影
+4. 支持纹理PEI热床
+5. 支持导入和导出预设
+6. 支持随机位置的接缝设置
+7. 支持匈牙利语
+8. 一些关键问题修复
+
+详细信息请查看：https://github.com/bambulab/BambuStudio/releases

doc/release_notes_en.md

@@ -0,0 +1,18 @@
+**New Features**
+1. 3D text tool
+2. Shared data between an object and its copies
+3. Parameter table
+4. User manual
+5. Arachne feature
+
+**Improvements**
+1. Added support for exporting generic 3mf that is compatible with other slicers
+2. Optimized the performance of hybrid and tree support
+3. Added traditional timelapse mode
+4. Added support for Textured PEI plate
+5. Added support for export/import preset
+6. Added random seam position
+7. Added Magyar translations
+8. Fixed some known bugs
+
+For details, please check https://github.com/bambulab/BambuStudio/releases