Adds a modular bitrunning map, changes safehouse spawns (#79937)

## About The Pull Request
Primarily, this adds one new map to bitrunning that uses modular rooms.

<details>
<summary>pictures</summary>


![image](https://github.com/tgstation/tgstation/assets/42397676/48d78e05-1134-477c-a269-a4b71064058b)

![Screenshot 2023-11-25
133937](https://github.com/tgstation/tgstation/assets/42397676/851d6235-e939-465c-92e5-830886d50d9c)


![image](https://github.com/tgstation/tgstation/assets/42397676/6094dae6-fc3b-4cc4-9fd5-d7dd6d944cee)

</details>

I also added in some changes:
- Safehouses are now loaded using the modular map system rather than the
bespoke solution qservers had.
- Lowers the difficulty of psyker shuffle (which I felt was a little too
nightmarish) and boosts its rewards.
## Why It's Good For The Game
New maps
More integration with prior systems
## Changelog
🆑
add: Added a new modular bitrunning domain - Starfront Saloon.
balance: Psyker shuffle domain was made slightly easier and has been
given more rewards.
/🆑

code/modules/mapfluff/ruins/generic.dm

@@ -1,3 +1,4 @@
+/// Generic maps with several available biomes.
 /obj/modular_map_root/generic
 	config_file = "strings/modular_maps/generic.toml"