obs-outputs: Fix author for net-if.* files

These files were heavily modified but originally written by:
B. Lee <bl4@postpile.net>

plugins/obs-outputs/net-if.c

 /******************************************************************************
-    Copyright (C) 2016
+    Copyright (C) 2016 B. Lee <bl4@postpile.net>
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by

plugins/obs-outputs/net-if.h

 /******************************************************************************
-    Copyright (C) 2016
+    Copyright (C) 2016 B. Lee <bl4@postpile.net>
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by