docs: add clarification for the permission needed for GuildBanAdd and GuildBanRemove

[kshitijanurag]

Add clarification about the permission needed for receiving the GuildBanAdd and GuildBanRemove gateway events.

Discord API Docs Reference: discord/discord-api-docs#7948

[Mewyk]

Doesn't follow the existing xml documentation patterns for this file (should be in remarks). I also believe this specific information should be properly placed elsewhere.

[kshitijanurag]

Remark about permission for GuildAuditLogEntryCreate is also mentioned in summary so it seems to be consistent and follows the XML doc pattern.

NetCord/NetCord/Gateway/GatewayClient.cs

Line 297 in 79b9381

/// The inner payload is an <see cref="AuditLogEntry"/> object. This event is only sent to bots with the <see cref="Permissions.ViewAuditLog"/> permission.<br/>

[Mewyk]

I do agree that there are a few other inconsistencies in that file as it currently stands, which would make that fine. However, that stuff needs to be cleaned up, so that reasoning holds no weight here.

The bigger issue is visibility for the specific "clarification" as a whole for the main purposes of XML documentation. If you put it in the gateway client instead of the permission file, then when someone autocompletes/selects that permission symbol in an IDE, no one is going to see that specific remark because it's in gateway client.