Mutal guilds in oauth2 for https interactions apps

[banocean]

HTTPS interactions actually can't load all guilds from gateway and sync this with cache, also When you add only application commands to the server bot can't load /guilds/:ID to check this (event when it would be able to do that, spamming api with 80 - 200 requests per user is stupid)

Suggestion how to fix this:

• Create custom endpoint to get only mutal guild
• Add to /users/@me/guilds mutal field

[Skye-31]

This is a duplicate of #3251

[banocean]

But I'm talking about oauth2 and https interactions cases

[Skye-31]

While it may be for a different use-case, it's the same feature request either way.