[MODULAR] converts kiwis and banana spiders into basic mobs.

[Tastyfish]

About The Pull Request

These appear to be our only non-hostile simple_mobs that aren't also directly based on another fleshed out simple_mob.

Most of our other custom mobs can be updated when their parents are.

These were straight-forward conversions once I got my head around the differences. I have no clue why their were in the master files before, so I made a new module for random critters.

How This Contributes To The Skyrat Roleplay Experience

Simple animals are going away.

Proof of Testing

Screenshots/Videos

Changelog

:cl: add: You can now pet kiwis. /:cl:

[tf-4]

And so it begins