feature: added some mobs

[Bksp]

added:

Alexmob´s

• Squid (3 colors)
• Catfish
• Skelewag
• Terrapin (All)
• Flying Fish
• Bison
• Tusklin
• Murmur

-------------update--------------

• anaconda
• anteater
• banana_slug
• blue_jay
• bunfungus
• comb_jelly
• cosmaw
• cosmic_cod
• devils_hole_pupfish
• farseer
• flutter
• froststalker
• gelada_monkey
• jerboa
• maned_wolf
• mudskipper
• potoo
• rain_frog
• rhinoceros
• rocky_roller
• skreecher
• skunk
• sugar_glider
• toucan
• underminer
• laviathan

ARTIFACTS

• mimic

AQUAMIRAE

• poisoned_chakra
• captain_cornelia
• maw
• tortured_soul
• spinefish
• anglerfish
• eel
• maze_mother
• golden_moth

GALOSPHERE

• spirit

[vindocel]

I was thinking about implementing Alex's mobs that weren't implemented, but I see that you've already done it. I'll just download it from your repository and put it in my pack and be happy :)

[nyrghzef]

Any estimates for when this will be merged? I have some small improvements to add (variants) but don't want to create another pull request since this would probably cause some confusion.