[MDB Ignore] [Catwalk] Remaps dorms, atmos, a some of engi, and several small fixes/tweaks (#94016)

## About The Pull Request

### Main changes

<Details>

<Summary> Lower Dorms </Summary>

<img width="964" height="989" alt="image"
src="https://github.com/user-attachments/assets/014fdc29-59ac-4dbc-b373-da735a284a7f"
/>

</Details>

<Details>

<Summary> Upper Dorms </Summary>

<img width="871" height="968" alt="image"
src="https://github.com/user-attachments/assets/9c35994a-fc28-40f5-bc26-849d3d0ce705"
/>

</Details>

<Details>

<Summary> Lower Tool Storage </Summary>

<img width="500" height="637" alt="image"
src="https://github.com/user-attachments/assets/373b6c78-cba5-4d23-afb8-fd4f24412ab2"
/>

</Details>

<Details>

<Summary> Upper Tool Storage </Summary>

<img width="526" height="647" alt="image"
src="https://github.com/user-attachments/assets/a52a4c88-51ae-4d10-b6d0-f0dc2de0e1ac"
/>

</Details>

<Details>

<Summary> Lower Atmos </Summary>

<img width="1126" height="728" alt="image"
src="https://github.com/user-attachments/assets/8c5e50fd-611a-4d0c-a0ff-d0b0427fdb9b"
/>

</Details>

<Details>

<Summary> Upper Atmos </Summary>

<img width="1149" height="727" alt="image"
src="https://github.com/user-attachments/assets/a702d5d0-a682-46f5-82d4-200fe69c3bf4"
/>

</Details>

### Misc changes

- The CE's office was pushed out a bit to use dir-windows less.
- AI sat entrance as pushed out a bit to give it some room to breathe.
- Cargo-Engi upper maint saw some minor tweaks to accommodate. 
- Use of First Aid stations was audited, removing extras in some
locations.
- Generic Event landmarks were audited, removing all of them from maint
and adding several around the station.
- Xenobio's kill room uses a passive vent as it should.
- Fixed some stray space (rather than openspace) on the upper Z.

## Why It's Good For The Game

### Dorms changes

Catwalk's dorms being right aligned resulted in a bit of a roundabout
path to get to the holodeck, which in turn meant it was scarcely
accessed. I addressed this by left aligning it instead, allowing a
straight shot from the main hallway to the holodeck.

Additionally, while I really liked the luxury dorms rooms, it felt like
people quickly ran out of places to log out in, given there was only 5
functional rooms. So I added a few extra rooms upstairs embedded in the
opposite wall.

Losing the small garden is a bit sad I cannot lie but given the room was
pretty inaccessible to the crew anyways I figured repurposing it would
be the way forward. Maybe it'll return as a park though, somewhere.

### Tech storage changes

To fit the new dorms rooms, I had to move tech storage. I found it kind
of awkward that it was just situated in a box accessible by a ladder, so
I gave it a proper staircase and re-arranged the rest of the room with
the new space unlocked.

This does make secure tech storage a fair bit more vulnerable, so that
might need to be addressed.

### Atmos changes

In left-aligning the rooms I had to eat into maint, which cut up the
maint access in the area. I didn't really like that so I had to do some
work in engineering.

Initially I wanted to get rid of the Long Hallway of Doom, but as I
picked at it (and also needed a new place for the Gravity Generator) I
ended up giving Atmos a full touch-up. It now feels a bit more like a
proper atmos, with plenty of piping running around.

I know Atmos players will certainly gripe about losing the free space
but there is still plenty to go around, especially with the oft-unused
engi project room.

Grav Gen now sits at the end of the much-shorter upper hallway, making
it easier to find.
The Incinerator room is also integrated into Atmos, making it stick out
a little less.
Lastly, the SM saw some minor piping and wire changes to hopefully make
it a bit easier to work with, but nothing major.

## Changelog

🆑 Melbert
add: [Catwalk] Entirely new Dorms & Holodeck 
add: [Catwalk] Modified Atmos, Gravity Generator, Engineering and Tech
Storage a fair bit
add: [Catwalk] Event locations were updated, meaning several random
events now trigger in more appropriate places
del: [Catwalk] Removed duplicate First Aid stations in a few places
qol: [Catwalk] Changed around maint areas (not the actual layouts but
the area designations) to be a bit less monolithic
fix: [Catwalk] Xenobio kill room uses a passive vent
fix: [Catwalk] Fixes a few erroneous space tiles around sec
/🆑

code/game/area/areas/station/maintenance.dm

@@ -165,6 +165,9 @@
 	name = "Central Starboard Maintenance"
 	icon_state = "centralstarboardmaint"
 
+/area/station/maintenance/starboard/central/upper
+	name = "Upper Central Starboard Maintenance"
+
 /area/station/maintenance/starboard/greater
 	name = "Greater Starboard Maintenance"
 	icon_state = "greaterstarboardmaint"
@@ -177,10 +180,16 @@
 	name = "Aft Starboard Maintenance"
 	icon_state = "asmaint"
 
+/area/station/maintenance/starboard/aft/upper
+	name = "Upper Aft Starboard Maintenance"
+
 /area/station/maintenance/starboard/fore
 	name = "Fore Starboard Maintenance"
 	icon_state = "fsmaint"
 
+/area/station/maintenance/starboard/fore/upper
+	name = "Upper Fore Starboard Maintenance"
+
 /area/station/maintenance/port
 	name = "Port Maintenance"
 	icon_state = "portmaint"