ESP32

add explicit convertion of enums #219

Job	Run time
setup-environment	2s
build (ESP32_GENERIC-SPIRAM)	2m 21s
build (ESP32_GENERIC_S2)	2m 27s
build (ESP32_GENERIC_S3)	2m 34s
build (ESP32_GENERIC_S3-SPIRAM_OCT)	2m 38s
build (ESP32_GENERIC_S3-FLASH_4M)	2m 49s
build (ESP32_GENERIC-SPIRAM@WROVER_KIT)	2m 20s
build (ESP32_GENERIC-SPIRAM@ESP_EYE)	2m 24s
build (ESP32_GENERIC-SPIRAM@M5STACK_PSRAM)	2m 26s
build (ESP32_GENERIC-SPIRAM@M5STACK_V2_PSRAM)	2m 36s
build (ESP32_GENERIC-SPIRAM@M5STACK_WIDE)	2m 41s
build (ESP32_GENERIC-SPIRAM@M5STACK_ESP32CAM)	2m 30s
build (ESP32_GENERIC-SPIRAM@M5STACK_UNITCAM)	2m 30s
build (ESP32_GENERIC-SPIRAM@AI_THINKER)	2m 41s
build (ESP32_GENERIC-SPIRAM@TTGO_T_JOURNAL)	2m 23s
build (ESP32_GENERIC-SPIRAM@TTGO_T_CAMERA_PLUS)	2m 31s
build (ESP32_GENERIC_S3-SPIRAM_OCT@M5STACK_CAMS3_UNIT)	2m 35s
build (ESP32_GENERIC_S3-SPIRAM_OCT@XIAO_ESP32S3)	2m 36s
build (ESP32_GENERIC_S3-SPIRAM_OCT@ESP32S3_CAM_LCD)	2m 33s
build (ESP32_GENERIC_S3-SPIRAM_OCT@ESP32S3_EYE)	2m 48s
build (ESP32_GENERIC_S3-SPIRAM_OCT@FREENOVE_ESP32S3_CAM)	2m 44s
build (ESP32_GENERIC_S3-SPIRAM_OCT@DFRobot_ESP32S3)	2m 33s
build (ESP32_GENERIC_S3-SPIRAM_OCT@NEW_ESPS3_RE1_0)	2m 34s
build (ESP32_GENERIC_S3-SPIRAM_OCT@XENOIONEX)	2m 44s
	59m 0s

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