Add chat-specific overloads for PromoteChatMemberAsync

[karb0f0s]

promoteChatMember method has subset of options, related only to specific chat types: can_pin_messages - ... supergroups only, can_edit_messages - ... channels only. Maybe we can add overloaded methods with specific subset of options:

// Channel-specific overload
public Task PromoteChatMemberAsync(
            this ITelegramBotClient botClient,
            ChatId chatId,
            long userId,
            ChannelPermissions channelPermissions,
            CancellationToken cancellationToken = default
        );

// Supergroup-specific overload
public Task PromoteChatMemberAsync(
            this ITelegramBotClient botClient,
            ChatId chatId,
            long userId,
            SupoergroupPermissions supergrouplPermissions,
            CancellationToken cancellationToken = default
        );

[tuscen]

This feature goes against our rule to stick to type hierarchy from the Bot API docs. In the docs ChatPermissions object doesn't have a hierarchy split between different types of chats so we shouldn't assume it.

[tuscen]

Though we can ask Telegram to do the same thing as they did with ChatMember object, i.e. to split it officialy in the docs.