protocols: refactor protocol logging to a macro (#7324)

this avoids the usage of the unique_ptr PROTO::protocol before it has
been constructed incase one wants to log something inside the
constructor itself, move the logging to macros and print file:linenumber
on ERR,CRIT,WARN and classname on the rest of the levels.

src/protocols/ServerDecorationKDE.cpp

@@ -1,8 +1,6 @@
 #include "ServerDecorationKDE.hpp"
 #include "core/Compositor.hpp"
 
-#define LOGM PROTO::serverDecorationKDE->protoLog
-
 CServerDecorationKDE::CServerDecorationKDE(SP<COrgKdeKwinServerDecoration> resource_, SP<CWLSurfaceResource> surf) : resource(resource_) {
     if (!good())
         return;