tests: static_idt: Add description and RTM links
tests: static_idt: Add description and RTM links

Add doxygen groups, description and RTM links for
static idt test cases

Signed-off-by: Ajay Kishore <98a7172232322926cd79c9773312d28566a3b3e9@intel.com>

galak/zephyr,punitvara/zephyr,explora26/zephyr,kraj/zephyr,finikorg/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,ldts/zephyr,finikorg/zephyr,nashif/zephyr,kraj/zephyr,finikorg/zephyr,explora26/zephyr,explora26/zephyr,galak/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr,ldts/zephyr,kraj/zephyr,kraj/zephyr,nashif/zephyr,nashif/zephyr,Vudentz/zephyr,finikorg/zephyr,punitvara/zephyr,ldts/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,finikorg/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,nashif/zephyr,Vudentz/zephyr,galak/zephyr,galak/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr