Se api

Just for preview. Please don't merge it.
Hi Jens,
Do you have any idea how to create a xtest compatible static TA? Since I don't have xtest access right. My design uses one command to trigger all self tests. Thus, even 1 test case return an error code, the client APP doesn't know which test case fails. I can change it to use one command for one test case, but it needs a method letting client APP knows how many test cases we have. (Or we need to modify both client and TA when adding a new test case, that is tedious) I guess xtest already has such kind of framework ?