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 <datamine@aitsys.dev>

• fix: home header cdn

Signed-off-by: Lala Sabathil <aiko@aitsys.dev>

• feat: Ability to edit icon and tags for applications

• chore: Remove unused import

• feat: add HomeHeader to GuildEditModel

• docs: document internal argument

• fix!: new route does not have team infos

• fix!: Change discordclient method to use new route and remove team

• feat: Add flags to webhook builder

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Signed-off-by: Lala Sabathil <aiko@aitsys.dev>
Co-authored-by: Datamine Team <datamine@aitsys.dev>