Add the index for “onomatoc” and “for artbreeder tools”

Artist -

I am impatient!
[for artbreeder tools](/search?q=for+artbreeder+tools)
These tags need to be indexed! I’m not begging you, I’m asking you!
Suggested short descriptions:
onomatoc: A character that is based on a sound effect.
for artbreeder tools: An image that can be used for artbreeder tools (e.g Mixer, Worlds, etc).
Suggested detailed description:
onomatoc: OCs that are based on songs, music, and soundtrack can also count as an onomatoc.
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