add creating hash table for event desc

Signed-off-by: Yakov Goldberg <yakov.g@samsung.com>
add Cb_Type; simulationn with proper cb calls

Signed-off-by: Yakov Goldberg <yakov.g@samsung.com>
add string to handle events in generation

Signed-off-by: Yakov Goldberg <yakov.g@samsung.com>