[mood] littles

[Gankra]

I intentionally avoided abdl stuff in the base moods because that is Contentious Content (and not my scene) but i know a lot of people are clamouring for it so i would certainly accept a PR to add little/little-thirsty/... moods (probably you'd want some extra granularity here, idk, do what you think your kinda people would like)

• docs on the responses.json format
• how to add new moods
• how to add new variables
• how True Roles let you have multiple cargo-mommy profiles

[Gankra]

#37 changes this again and now you really only need to edit responses.json, need to update docs...

[Gankra]

Several changes and new docs, see initial comment for up to date details.