Timer unit initialization

...configuration/zephyr/public_api/HardwareConfiguration.cpp

...hardware_configuration/zephyr/src/hrtim_configuration.cpp

...h_hardware_configuration/zephyr/src/hrtim_configuration.h

...yr/modules/owntech_hrtim_driver/zephyr/public_api/hrtim.h

zephyr/modules/owntech_hrtim_driver/zephyr/public_api/leg.h

...yr/modules/owntech_hrtim_driver/zephyr/src/hrtim_common.c

...hrtim_driver/zephyr/src/voltage_mode/hrtim_voltage_mode.c

...hrtim_driver/zephyr/src/voltage_mode/hrtim_voltage_mode.h

...tim_driver/zephyr/src/voltage_mode/owntech_leg_driver.cpp