shell: Add test for dictionary command
shell: Add test for dictionary command

The test also check that dictionary set with matching
items can be declared

Signed-off-by: Guillaume Lager <e71b22248a48be36ec5c3996607e6ee5cb1844f3@innoseis.com>

galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr