boards: norik: Add support for Norik Octopus IO-Board

Add support for Norik Systems Octopus IO-Board based on
Norik Systems Octopus SoM.

Supported features:
 - LTE-M/NB-IoT
 - GPS
 - LED
 - 3-axis accelerometer
 - Battery charger
 - Solar charger
 - SPI NOR flash
 - Nano SIM connector

Signed-off-by: Florijan Plohl <florijan.plohl@norik.com>