Add an OPTION_GROUP command option type

[DemonSlayer111]

Add an OPTION_GROUP slash command option type to allow for better management of option requirements for a command.

Why this is needed

Command option requirements are currently set independent of each other. However, there may be situations where a command may not have a specific requirement but simply requires one or more of several options to be provided.

Additionally, there may be cases where a command has two or more options that aren't required individually but require several options to be provided together in order to execute the command successfully.

Solution

A new option type OPTION_GROUP would be an adequate solution for grouping options together and more clearly defining which options are required for a command to be executed successfully.

Structure

Field	Type	Notes
type	integer	11 for OPTION_GROUP
name	string	name of the option group
description	string	descriptuon of the option group
required	boolean	whether this option group is required
min_options	integer	the minimum number of options in this group that can be selected
max_options	integer	the maximum number of options in this group that can be selected
options	array of application command options	the number of options with required set to true cannot be greater than the max_options value

Example command using Option Groups

{
  name: "embed",
  type: 1,
  description: "Create an embed",
  options: [
    {
      name: "fields",
      description: "Required embed field",
      type: 11,
      required: true,
      min_options: 1,
      max_options: 2,
      options: [
        {
          name: "description",
          description: "Set the embed description",
          type: 3,
          required: false
        },
        {
          name: "image",
          description: "Set the embed image",
          type: 3,
          required: false
        }
      ]    
    },
    {
      name: "color",
      description: "Set the embed color",
      type: 3,
      required: false
    }
  ]  
}