Adding the support for Nano 33 BLE Sense Rev2

[logocar3]

Minimum requirements

• Core clock speed is 48 MHz or faster?
• Is the CPU an ARM Cortex M0+ or later?
• Does the host microcontroller have at least 32 KB of flash memory?
• Is the host microcontroller's UART peripheral able to support 420,000 (or higher) baud rate(s)?
• Is your development board currently supported in the Arduino IDE?

What development board would you like me to add?

My board is Arduino Nano 33 BLE Sense Rev2, it uses Nordic nRF52840 with cortex M4.

Board page: https://docs.arduino.cc/hardware/nano-33-ble-sense-rev2/
Nordic product page: https://www.nordicsemi.com/Products/nRF52840
Datasheet nordic: https://docs-be.nordicsemi.com/bundle/ps_nrf52840/attach/nRF52840_PS_v1.11.pdf?_LANG=enus

[ZZ-Cat]

Looks like it can be done.

Keep in mind that there is currently a feature freeze on CFA while I whittle my way through preparations for releasing v1.1.0.
This means your request will not make it into the upcoming v1.1.0 release, but it will make it into one of the next releases after v1.1.0.