Mining Base additions/changes, fix medical access to telepad (#6574)

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## About The Pull Request

- Allows medical to access the quantum telepad to Surt again. Not sure
why this got taken away.

This otherwise makes a few changes to the mining base.
- Clears access restrictions on a large handful of the airlocks,
particularly the ones involved with the dormitories, break room, and
bathroom. The storage's access is also cleared.
- The janitor can access the custodial closet.
- Engineers and the usual group allowed to access the mining base can
access the engine room.
- Expands the storage room, adds a section for xenoarcheology equipment.
Locks mining equipment behind windoors, and xenoarch equipment also
behind windoors. Appropriate access required to open the doors.
- Adds a high-capacity cell at the cell charger.

You will still need security, medical, science, mining, or exploration
to let you into the mining base to begin with as a civillian/engineering
job. This primarily just helps the appropriate jobs perform maintenance
where they're required, if they're needed.

## Why It's Good For The Game

Making the mining base increasingly more of a place of operation for not
just mining, but also scientists feels like an appropriate step in the
right direction.

A lot of the access restrictions otherwise felt unnecessary. They're
just dormitories and a break room. What're people gonna do? Drink and
sleep?

## Changelog

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🆑
tweak: The mining base on Surt has had a few access restrictions cleared
out to make it more convenient for those who need to do maintenance
there. There's also now a xenoarcheology section in storage.
fix: Medical now has access to the Surt telepad again.
/🆑

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code/modules/mapping/map_helpers/access_helper/airlock.dm

@@ -43,6 +43,7 @@
 		ACCESS_SECURITY_MAIN,
 		ACCESS_SCIENCE_MAIN,
 		ACCESS_SUPPLY_MAIN,
+		ACCESS_MEDICAL_MAIN,
 		ACCESS_COMMAND_IAA,
 	)