[PRS_Dlt_00194] SetLogLelel supports wildcards for AppID and CtxID

according to [PRS_Dlt_00194]
If the application ID is set to NULL all log level for all Context ids are set for this ECU.
If the context ID is set to NULL all log level for all the Context ids belonging to the given Application ID are set.

Currently dummy "APP" and "CON" are used instead.

Start by locating the SetLogLelel handling in the C++ code and trace where the dummy "APP" and "CON" values are assigned. Compare that behavior with the issue's NULL semantics for AppID and CtxID, then verify that wildcard updates apply to the intended contexts and application.

Written by the indexing model from the issue text.