TrainHeist 0.2.26

This update is for the game update in a few hours. Do not install this prior to the upcoming game update

Fixed for Rust update

Prevent train car being destroyed with explosives
Also mark player hostile if they attack the scientists on the train so the turret will target them
Added config option to change NPC health
Set initial train speed to config option
Changed config option for train speed to show the available options

Created custom extension method for checking contents of query buffer as Oxides isn't null checking
Added 'trainheist' console command
Send periodic network updates for loot as it can be slow to show on clients