Almayer: Turns (mostly) empty maint room into Armourer workshop with …

…old L42As (#4888)

# About the pull request

This PR attempts to detail a maint room on the Almayer into a small
workshop and adds L42As to the Almayer as a
homage to our old battle rifle and to have this lore tidbit referenced
ingame

https://i.imgur.com/hfQNpem.png

# Explain why it's good for the game

While I agree with the L42As replacement with the M4RA there were some
people who prefer the look and sound design of the L42A and may have
felt kinda left behind, since the two guns are basically the same there
is no real harm in placing a few of them with supporting magazines in
this room that was already sparsely detailed I could imagine possible
roleplay interactions "Why the hell are you using that piece of crap
L42A not even the USCM wants those things" as well as my prior statement
of it being a good excuse to canonize a lore tidbit into the game itself

Some things to note
there are 9 L42As and two boxes of regular magazines (32 magazines), 19
magazines of L42A AP (empty), and a few M39s and M41As so the place
isn't only L42A rifles, the noticeboard has a unique flavor text written
by tophat penguin and the secure closets the majority of L42As spawn in
are locked by default

it's important to note that to my understanding right now the L42A and
M4RA are basically the same but if in the future a noticeable difference
between the guns appears the L42As in this room may have to be removed

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
:cl: SpartanBobby Tophatpenguin
maptweak: redetails a room on the upper deck of the USS Almayer, places
a few L42As in this room
/:cl: