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This commit addes an example showing how to receive messages using the TWAI
driver interface and a CAN transceiver. Specifically, the example demonstrates:

- How to configure and install the TWAI drvier
- How to poll for TWAI events (i.e., alerts) using twai_read_alerts()
- How to handle the various events (such as TWAI_ALERT_RX_DATA)

Closes https://github.com/espressif/arduino-esp32/pull/7430Co-authored-by: Stephan Martin <designer2k2@gmail.com>