Document current Items for wiki

[odecay]

Description

Write a summary of each item, how they work/what they do for https://github.com/fishfolk/punchy/wiki/Items

[rhyses-pieces]

Hi there! I wasn't sure if there were any contribution guidelines in regards to the wiki, but I've listed all current items and summarized them to the best of my ability.

You can see the outline I've done here: https://github.com/fishfolk/punchy/wiki/Items/8eb4b98b180b97109799c432881a315b3ef4b71b

Please let me know if I've made any mistakes.