Arduino Alpha 2 Release v3.0.0 based on ESP-IDF v5.1

The Arduino ESP32 pre-release version 3.0.0-aplha 2 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1. This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6.

Major changes

• Fixes installation on ArduinoIDE 1.x and RV toolchain on Windows
• Update toolchains to use the tar.gz format for IDE1 compatibility by @me-no-dev in #8757
• Rename the RV32 toolchain on release to fit paths in GCC limit by @me-no-dev in #8750

Other changes

• Fix standalone component build and enable CI check for it by @me-no-dev in #8743
• Add the sketch folder as the first include search path by @me-no-dev in #8734
• IDF release/v5.1 by @me-no-dev in #8758

Boards additions and updates

• Add SparkFun ESP32-C6 Qwiic Pocket Development Board Variant by @sfe-SparkFro in #8754
• Fixed bug for LilyGo T-display on boards.txt by @thebear132 in #8744

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Full Changelog: 3.0.0-alpha1...3.0.0-alpha2

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New Contributors

• @thebear132 made their first contribution in #8744

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Thanks for your contribution! 🎉