Plugin does not check if Debugger plugin supports cbDebuggerFeature::ExamineMemory

[acotty]

The plugin is enabled even if the debugger does not support viewing memory via the call to "plugin->SupportsFeature(cbDebuggerFeature::ExamineMemory)" as can be seen in the watchdlg.cpp

Found this when testing with the DAP debugger as at the moment i have memory viewing disabled as it is not implemented yet.