add semaphore test case which cover basic sema apis
across thread/thread and thread/isr contexts.
Change-Id: I2041969fcdc70a4dfc95438f067fbef8ebb31b19
Signed-off-by: jing wang <jing.j.wang@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>