v2.3.0 to fix doubled time for ESP32_C3, ESP32_S2 and ESP32_S3 and to use allman astyle

[khoih-prog]

Releases v2.3.0

1. Fix doubled time for ESP32_C3, ESP32_S2 and ESP32_S3. Check Error in the value defined by TIMER0_INTERVAL_MS #28
2. Modify examples to avoid using LED_BUILTIN / GPIO2 as it cam cause crash in some boards, such as ESP32_C3
3. Use allman astyle and add utils

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This discussion was created from the release v2.3.0 to fix doubled time for ESP32_C3, ESP32_S2 and ESP32_S3 and to use `allman astyle`.