Buddy rework, adjustments, and fixes

I cleaned up the code a bit (I'll clean it up more as I make more progress) and fixed a bug with buddy slots. Now buddies aren't overwritten!
A few reworks and adjustments

I reworked the buddyIDs array to store only player UIDs instead of IDs. I also reworked buddy deleting so that it deletes buddies from the array.
Code cleanup

Cleaned up some of the code. I mainly just removed useless helper methods.

src/PlayerManager.cpp

@@ -293,6 +293,9 @@ void PlayerManager::enterPlayer(CNSocket* sock, CNPacketData* data) {
     // TODO: check if serialkey exists, if it doesn't send sP_FE2CL_REP_PC_ENTER_FAIL
     Player plr = CNSharedData::getPlayer(enter->iEnterSerialKey);
 
+    plr.buddyCnt = 0;
+    std::cout << "Buddy Count: " << plr.buddyCnt << std::endl;
+
     plr.groupCnt = 1;
     plr.iIDGroup = plr.groupIDs[0] = plr.iID;