rDCSa47839686ec0

feat: Application rework (#275)

* feat: Application rework

- Added /applications/@me `GET` & `PATCH`
- Implemented method `BaseDiscordClient.UpdateCurrentApplicationInfoAsync`
- Updated internal methods to get current app infos to use new route
- Added guild home header property, might not be correct
- Added `DiscordClient.GetCurrentApplicationOauth2InfoAsync`

* feat: more flags and states

* Thanks to Dolfies

Co-authored-by: Datamine Team <[email protected]>

* fix: home header cdn

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