[refactor] Remove the word 'Manager' from most source files/namespaces

ChatManager -> Chat
MissionManager -> Missions
NanoManager -> Nanos
TransportManager -> Transport
ChunkManager -> Chunking
BuddyManager -> Buddies
GroupManager -> Groups
RacingManager -> Racing
ItemManager -> Items

NPCManager and PlayerManager remain.

Note: You can use git log --follow src/file.cpp to trace the history of
a file from before it was renamed.

src/Transport.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include "CNShardServer.hpp"
+#include "NPCManager.hpp"
+
+#include <unordered_map>
+
+const int SLIDER_SPEED = 1200;
+const int SLIDER_STOP_TICKS = 16;
+const int SLIDER_GAP_SIZE = 45000;
+
+struct WarpLocation;
+
+struct TransportRoute {
+    int type, start, end, cost, mssSpeed, mssRouteNum;
+};
+
+struct TransportLocation {
+    int npcID, x, y, z;
+};
+
+namespace Transport {
+    extern std::map<int32_t, TransportRoute> Routes;
+    extern std::map<int32_t, TransportLocation> Locations;
+    extern std::map<int32_t, std::queue<WarpLocation>> SkywayPaths; // predefined skyway paths with points
+    extern std::unordered_map<CNSocket*, std::queue<WarpLocation>> SkywayQueues; // player sockets with queued broomstick points
+    extern std::unordered_map<int32_t, std::queue<WarpLocation>> NPCQueues; // NPC ids with queued pathing points
+
+    void init();
+
+    void testMssRoute(CNSocket *sock, std::vector<WarpLocation>* route);
+
+    void lerp(std::queue<WarpLocation>*, WarpLocation, WarpLocation, int, float);
+    void lerp(std::queue<WarpLocation>*, WarpLocation, WarpLocation, int);
+}