feat: add ACTIVE_DEVELOPER user flag

[pkdev08]

Please describe the changes this PR makes and why it should be merged:

adds the ACTIVE_DEVELOPER user flag.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

2 Ignored Deployments

Name	Status	Preview	Comments	Updated (UTC)
discord-js	⬜️ Ignored (Inspect)			Apr 20, 2023 1:50am
discord-js-guide	⬜️ Ignored (Inspect)			Apr 20, 2023 1:50am

[Jiralite]

Hey there, thank you for contributing.

This seems alright, except for the linting errors. Make sure you follow version 13's contributing guidelines so you can catch these errors before opening a pull request!

Be sure to add this in the typings too:

discord.js/typings/index.d.ts

Lines 6429 to 6443 in 4f26ba7

	export type UserFlagsString =
	| 'DISCORD_EMPLOYEE'
	| 'PARTNERED_SERVER_OWNER'
	| 'HYPESQUAD_EVENTS'
	| 'BUGHUNTER_LEVEL_1'
	| 'HOUSE_BRAVERY'
	| 'HOUSE_BRILLIANCE'
	| 'HOUSE_BALANCE'
	| 'EARLY_SUPPORTER'
	| 'TEAM_USER'
	| 'BUGHUNTER_LEVEL_2'
	| 'VERIFIED_BOT'
	| 'EARLY_VERIFIED_BOT_DEVELOPER'
	| 'DISCORD_CERTIFIED_MODERATOR'
	| 'BOT_HTTP_INTERACTIONS';