Implement interrupts and noInterrupts

[Ayush1325]

• Using irq_lock and irq_unlock zephyr apis.
• Not really sure where these should go. Common.h has the following line:

  // interrupts() / noInterrupts() must be defined by the core

• Need these for the NeoPixel library.

[Ayush1325]

You have defined interrupts() / noInterrupts() only in common.cpp. How will anyone outside of this file ever use it? Using it in some example would be great.

These function prototypes don't exist in the Arduino Core API. See how SAMD has done it: https://github.com/arduino/ArduinoCore-samd/blob/993398cb7a23a4e0f821a73501ae98053773165b/cores/arduino/Arduino.h#L53

Is there a reason to use macro instead of just adding function prototype to Arduino.h?

[DhruvaG2000]

You have defined interrupts() / noInterrupts() only in common.cpp. How will anyone outside of this file ever use it? Using it in some example would be great. These function prototypes don't exist in the Arduino Core API. See how SAMD has done it: https://github.com/arduino/ArduinoCore-samd/blob/993398cb7a23a4e0f821a73501ae98053773165b/cores/arduino/Arduino.h#L53

Is there a reason to use macro instead of just adding function prototype to Arduino.h?

Nope, not atall. I just meant to show that they have exposed it via the Arduino.h. You can make it a prototype.

[DhruvaG2000]

Can you please rebase and force push?