4.x: (Docs) Add call requirements for method calls.

[csmir]

Adding remarks on functions that require specific permissions to assist developers:

i.e:

        /// <summary>
        ///     ...
        /// </summary>
        /// <remarks>
        ///     Intents:
        ///         <see cref="GatewayIntents.GuildMembers"/>
        ///     
        ///     Permissions:
        ///         <see cref="GuildPermission.DeafenMembers"/>
        /// </remarks>
        /// <returns>...</returns>

This example does not make sense, it is just proof of concept.

If this should be present inside the summary or remarks is still up for discussion.