v2.2.0: Add bread-compact-nt26 board (#1663)

* Refactor application error handling and improve network task logic

- Updated error handling for modem initialization failure in Application::Initialize().
- Added new error message for modem initialization in English and Chinese language files.
- Simplified lambda captures in NetworkTask to avoid unnecessary references.
- Set main task priority in Application::Run() for better performance.

* Add support for Bread Compact NT26 board

- Introduced new board configuration for Bread Compact NT26 in CMakeLists.txt and Kconfig.
- Added board-specific implementation in compact_nt26_board.cc and nt26_board.cc.
- Created configuration files for NT26, including config.h and config.json.
- Updated dependencies in idf_component.yml to include uart-eth-modem.
- Translated error messages in config.h for OLED display type selection to English.
- Enhanced display and button initialization logic for NT26 board.

* Update project version and improve build configuration

- Updated project version from 2.1.0 to 2.2.0 in CMakeLists.txt.
- Enabled minimal build configuration to include only essential components.
- Updated README files to replace QQ group links with Discord links for community engagement.

* Update Bread Compact NT26 board configuration name in config.json

* fix compile errors

* Update uart-eth-modem dependency format in idf_component.yml

* fix esp32 compiling errors

* Update CMakeLists.txt to change component dependency from REQUIRES to PRIV_REQUIRES for esp_pm, esp_psram, and esp_driver_gpio

* Refactor CMakeLists.txt to explicitly list board common source files and update include directories for better clarity and organization.

* Add esp_driver_ppa as a dependency in CMakeLists.txt

README_zh.md

@@ -155,7 +155,7 @@ v1 的稳定版本为 1.9.2，可以通过 `git checkout v1` 来切换到 v1 版
 
 我们希望通过这个项目，能够帮助大家了解 AI 硬件开发，将当下飞速发展的大语言模型应用到实际的硬件设备中。
 
-如果你有任何想法或建议，请随时提出 Issues 或加入 QQ 群：1011329060
+如果你有任何想法或建议，请随时提出 Issues 或加入 [Discord](https://discord.gg/x3S4jgXHk3) 或 QQ 群：1011329060
 
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