accept server commands as N_SERVCMD

[sauerbraten]

can you add support for server commands to be sent using the dedicated N_SERVCMD packet instead of N_TEXT? shouldn't be more work than adding a line like this

remod-sauerbraten/src/fpsgame/server.cpp

Line 3170 in bede188

remod::onevent(ONCOMMAND, "is", sender, ftext);

after

remod-sauerbraten/src/fpsgame/server.cpp

Line 3744 in bede188

getstring(text, p);

both spaghetti and zeromod support this already:
https://github.com/benzomatic/spaghettimod/blob/ce5d66a883d6334c687ee1aaa34bda9500156e89/fpsgame/server.cpp#L4005
https://github.com/andrius4669/zeromod-sauerbraten/blob/065b9fde684519f325d975d3108d06e4526923c4/src/fpsgame/server.cpp#L4208

[vasyahuyasa]

OK, i make pull request soon