Modified _arena.txt file of recents maps to augment spawn rates

New map - Basalt Pillar
Switched Vast Expanse for Basalt Pillar
(Vast Expanse is still in the files ("OLD") It didn't look like I wished)

- Changed Room Settings for Communicator, Fantasy Isles, Greenhouse and Chimneys
- Changed thumbnails for Communicator, Fantasy Isles, Greenhouse and Chimneys
- Changed Death Type for Communicator, Fantasy Isles, Greenhouse and Chimneys

- Added sounds to every map

- Added 10 maps: Backyard, Darker, Deserted Roof, Elder Sequoias, Fallen Life, Hidden Ruins, Neuronal Abode, Rime Spikes, Treacherous Chasm, Vast Expanse

I tried my best to lower the load time
and revamp chimneys.
the old one is still in the files.

Added 5 new maps

Bridge - Inspired by an Iterator structure quite close to water
Snowy Pits - Inspired by Farm Arrays set in Saint campaign
Complex - Inspired by arena map Conflux or an Iterator's memory conflux
Acid Filters - Inspired by past garbage wastes
Communicator - Inspired an Iterator communication array

I'll stop for a bit working on the mod to focus on being able to implant a new region but it will not be forgotten

Added a new map - Reed Farm and changed thumbnails
In the future
An update with more than only 1 map
after I'll work on a region if I figure it out and maybe add a mod for making unused arenas maps usable or make a version for non-downpour players

added a new arena called Hollow inspired from the depths of subterranean
changed and fixed the others maps