add foundation libc to CI (#365) #162

Job	Run time
Check that stm32 generated code is up to date	43s
Unit Test UF2 (ubuntu-latest)	24s
Build (ubuntu-latest)	28s
Build Examples (espressif/esp)	2m 7s
Build Website	23s
Build (windows-latest)	1m 4s
Build Examples (gigadevice/gd32)	2m 10s
Build (macos-latest)	29s
Unit Test UF2 (windows-latest)	1m 1s
Build Examples (microchip/avr)	2m 9s
Unit Test UF2 (macos-latest)	32s
Dry Run Packaging	1m 14s
Build Examples (microchip/atsam)	2m 0s
Build Examples (nordic/nrf5x)	1m 58s
Unit Test Ports (ubuntu-latest, gigadevice/gd32)	26s
Build Examples (nxp/lpc)	1m 57s
Unit Test Regz (ubuntu-latest)	25s
Validate Foundation Libc (ubuntu-latest)	25s
Unit Test Ports (ubuntu-latest, raspberrypi/rp2xxx)	37s
Build Examples (stmicro/stm32)	34s
Unit Test Regz (windows-latest)	2m 10s
Validate Foundation Libc (windows-latest)	1m 16s
Unit Test Ports (ubuntu-latest, stmicro/stm32)	17s
Build Examples (raspberrypi/rp2xxx)	2m 15s
Unit Test Regz (macos-latest)	27s
Validate Foundation Libc (macos-latest)	27s
Unit Test Ports (windows-latest, gigadevice/gd32)	1m 45s
Unit Test Ports (windows-latest, raspberrypi/rp2xxx)	1m 17s
Unit Test Ports (windows-latest, stmicro/stm32)	1m 9s
Unit Test Ports (macos-latest, gigadevice/gd32)	26s
Unit Test Ports (macos-latest, raspberrypi/rp2xxx)	36s
Unit Test Ports (macos-latest, stmicro/stm32)	24s
	33m 35s

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