Seperate Saveloc(tp) cooldowns

[erdemozor]

A server I was playing in had set the command cooldown time higher than normal and css_tp commands would also get affected. I separated the teleport cooldown in the configs with a new variable "sharptimer_command_saveloc_cooldown" accepting floats like the "sharptimer_command_spam_cooldown" variable.

I also made necessary changes to ChatCommands.cs for the css_tp command:

            if (playerTimers[player.Slot].TicksSinceLastCmd > cmdSavelocCooldown)
            {
                //Updated do nothing
            }

Tested today and it seems to work.