Nitpicks of Meta Station (#10213)

* Update MetaStation.dmm

-Added BZ Canister to Xenobio.
-Changed Xenobio cold room door to have a glass window.
-Changed Science break room door to be Science themed.
-Changed access of the southern Exploration door to be the same as the northen maintenace door.
-Fixed weird light placement in Medbay-Chapel Maints.
-Added an O2 canister in Aux base for the purpose of refilling oxygen tanks once on lavaland, welding tank was moved to Aux base maintenance.
-Added intercomm to toxin testing room.
-Replaced Robotics Medical tools with a Medical Duffelbag.
-Added welding tool, welding goggles and floor tiles to the janitor.
-Changed the flooring in maintenance areas on the station to be consistant with Medbay maintenance.
-Replaced Brig Phys back walls with regular non-reinforced walls to allow break ins/outs and allow them to expand easier.
-Added camera to toxins to allow AI to see the inner door.
-Relocated a useless box and closet in Exploration maints.

* Reinforced the Security hardsuit room

* Fixed requested change and swapped R&D maintenance door

* Update MetaStation.dmm