boards: Add MAX32690EVKit board

Added MAX32690EVKit board
For more information about this board please check
https://www.analog.com/



MAX32690 has two core, Cortex-M4 and Risc-V.

Examples can be build by below command for cortex-m4

west build -b max32690evkit/max32690/m4 samples/hello_world

As a shorthand, the soc may be omitted from the build command and
keeping the corresponding forward slashes:

west build -b max32690evkit//m4 samples/hello_world

Co-authored-by: Jason Murphy <jason.murphy@analog.com>
Co-authored-by: Maureen Helm <maureen.helm@analog.com>
Signed-off-by: Sadik Ozer <sadik.ozer@analog.com>