[DRAFT] feat(interaction): added user option to command options

[lizclipse]

Adds a UserOption to allow slash commands to select and target users.

This is a draft currently, as (a) I'm still ramping up on Swift (making a Discord bot is my first real use of it), and (b) while this functions, it is less than ideal, as the interaction data provides all of the user information but this currently only gives the ID to consuming code. Ideally, it should pull out the user data and make it available to users of the package nicely, but for now it's working as an MVP so I can actually use it.

As to why I've opened the PR, mostly it's so I can get a 'no don't do that' early on if I'm going down the wrong path, and possibly to look at expanding it out to adding more of the options as well.

I've also tweaked the BotMessage class as well, since there's a lot of useful info in the Message that seems to get thrown away (e.g. I want access to the author ID, as I want to filter out messages created by the bot itself when using the createChannelMsg method). If this isn't wanted, I'll revert it, not exactly attached to it.

For future reference (mostly for myself), this is an example interaction object (with all sensitive values stripped out):

Interaction Object

{
  "t": "INTERACTION_CREATE",
  "s": 3,
  "op": 0,
  "d": {
    "version": 1,
    "type": 2,
    "token": "(string)",
    "member": {
      "user": {
        "username": "(string)",
        "public_flags": 0,
        "id": "(snowflake)",
        "global_name": "(string)",
        "discriminator": "0",
        "avatar_decoration": null,
        "avatar": "(string)"
      },
      "unusual_dm_activity_until": null,
      "roles": [
        "(snowflake)",
        "(snowflake)",
        "(snowflake)",
        "(snowflake)",
        "(snowflake)",
        "(snowflake)"
      ],
      "premium_since": null,
      "permissions": "(stringified int)",
      "pending": false,
      "nick": "(string)",
      "mute": false,
      "joined_at": "(ISO datetime)",
      "flags": 0,
      "deaf": false,
      "communication_disabled_until": null,
      "avatar": null
    },
    "locale": "en-GB",
    "id": "(snowflake)",
    "guild_locale": "ru",
    "guild_id": "(snowflake)",
    "guild": {
      "locale": "ru",
      "id": "(snowflake)",
      "features": [
        "THREE_DAY_THREAD_ARCHIVE",
        "SEVEN_DAY_THREAD_ARCHIVE",
        "MEMBER_PROFILES",
        "BANNER",
        "ROLE_ICONS",
        "PRIVATE_THREADS",
        "INVITE_SPLASH",
        "ANIMATED_ICON"
      ]
    },
    "entitlements": [],
    "entitlement_sku_ids": [],
    "data": {
      "type": 1,
      "resolved": {
        "users": {
          "(snowflake#1)": {
            "username": "(string)",
            "public_flags": 64,
            "id": "(snowflake#1)",
            "global_name": "(string)",
            "discriminator": "0",
            "avatar_decoration": null,
            "avatar": "(string)"
          }
        },
        "members": {
          "(snowflake#1)": {
            "unusual_dm_activity_until": null,
            "roles": [
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)",
              "(snowflake)"
            ],
            "premium_since": null,
            "permissions": "(stringified int)",
            "pending": false,
            "nick": "(string)",
            "joined_at": "(ISO datetime)",
            "flags": 0,
            "communication_disabled_until": null,
            "avatar": null
          }
        }
      },
      "options": [
        { "value": "(snowflake#1)", "type": 6, "name": "target" }
      ],
      "name": "(string:command name)",
      "id": "(snowflake)",
      "guild_id": "(snowflake)"
    },
    "channel_id": "(snowflake)",
    "channel": {
      "type": 0,
      "topic": "(string)",
      "rate_limit_per_user": 0,
      "position": 46,
      "permissions": "(stringified int)",
      "parent_id": "(snowflake)",
      "nsfw": true,
      "name": "(string)",
      "last_pin_timestamp": "(ISO datetime)",
      "last_message_id": "(snowflake)",
      "id": "(snowflake)",
      "guild_id": "(snowflake)",
      "flags": 0
    },
    "application_id": "(snowflake)",
    "app_permissions": "(stringified int)"
  }
}

[cryptoAlgorithm]

You're off to a great start! I feel that including the API message struct within BotMessage is a great addition, as that makes referencing new properties from the original message struct simple.

[lizclipse]

I stopped working on this because I stopped working on the bot I have (it's just a for-fun one), but I'm back at it and will try to update this a bit more. Will want to actually try out the interaction changes before marking the PR as ready, tho.

Just as an aside, does this project have any formatter set up?