Lua: Implement most API functions

include/LuaAPI.h

@@ -10,5 +10,14 @@ namespace MP {
 
     std::string GetOSName();
     std::tuple<int, int, int> GetServerVersion();
+    bool TriggerClientEvent(int PlayerID, const std::string& EventName, const std::string& Data);
+    size_t GetPlayerCount() { return Engine->Server().ClientCount(); }
+    void DropPlayer(int ID, std::optional<std::string> MaybeReason);
+    void SendChatMessage(int ID, const std::string& Message);
+    void RemoveVehicle(int PlayerID, int VehicleID);
+    void Set(int ConfigID, sol::object NewValue);
+    bool GetPlayerGuest(int ID);
+    bool IsPlayerConnected(int ID);
+    void Sleep(size_t Ms);
 }
 }