Added ESP IRAM attribute to examples (#1010) #1016

Job	Run time
rpi-build	44s
esp-build	3m 31s
arduino:avr:uno	4m 11s
arduino:avr:mega	5s
arduino:mbed:nano33ble	5s
rpi-pico-build	51s
arduino:mbed:envie_m4	5s
tock-build	1m 6s
arduino:megaavr:uno2018	10s
arduino:sam:arduino_due_x	6s
arduino:samd:arduino_zero_native	6s
adafruit:samd:adafruit_feather_m0	6s
adafruit:nrf52:feather52832	6s
esp32:esp32:esp32	6s
esp8266:esp8266:generic	5s
Intel:arc32:arduino_101	6s
SparkFun:apollo3:sfe_artemis	6s
STMicroelectronics:stm32:GenF3:pnum=BLACKPILL_F303CC	6s
STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_WL55JC1	6s
stm32duino:STM32F1:mapleMini	4s
MegaCoreX:megaavr:4809	8s
arduino:mbed_rp2040:pico	7s
rp2040:rp2040:rpipico	7s
CubeCell:CubeCell:CubeCell-Board	6s
MegaCore:avr:1281	7s
arduino:renesas_uno:minima	6s
rpi-test	10s
	12m 42s

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