Added missing fields to current characters and added Hu Tao information.

[amphy]

This PR does the following:

• Adds Hu Tao under characters/hutao/en.json
• Added the affiliation, birthday, and constellation fields to all characters except Amber (because she already had them)
• Rearranged fields to all be standardized based on Amber's ordering of fields, mainly for easy verification. The only fields that are still missing are "title" and "specialty dish" since these are not easily obtained in the game unless you own all the characters.
• Also updates some of Zhongli's text to the new buffs he received in 1.3
• Fixed some minor spelling mistakes and differences between in-game description and description in API file

Apologies for a kinda messy commit/not being on a branch. I did this through GitHub rather than pulling it down into an editor.

[NurMarvin]

Thank you for your contribution to the project! The messy commits shouldn't be an issue since I can just squash them into a single one.