Add the ability to create commands for handling user input

[aleksey925]

Description

• add the ability to create commands for handling user input
• add new commands: "Fix Spelling and Grammar" and "Improve Writing"
• implement possibility to abort request in the chat
• update deps
• fix linter issues
• update .gitignore

Screencast

Checklist

• I read the extension guidelines
• I read the documentation about publishing
• I ran npm run build and tested this distribution build in Raycast
• I checked that files in the assets folder are used by the extension itself
• I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Thank you for your contribution! 🎉

🔔 @abielzulio @erodactyl @pernielsentikaer @shichongrui @timolins @CruelMoney @k8scat @Nauxscript @aeither @leeonfield @husniadil @luckykong @SmileMachine @iamEvanYT you might want to have a look.

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[pernielsentikaer]

I'm not completely sure that commands like "Fix Grammar & Spelling" should live in the extensions, what do you think @abielzulio