Add new `Multiplayer` item tag/token to items

[joshpayette]

Description

Some items require multiplayer to be obtained. (See https://remnant.wiki/Multiplayer). Adding a new multiplayer tag that can be assigned to items would allow users of the Toolkit to search based on this token.

Requirements

Please submit a pull request to the development branch once you have this completed.

Guidance

In order to accomplish this, you will need to create the new Multiplayer token at item-tokens.ts. You will then be able to add the token to the required items (see item files in https://github.com/joshpayette/remnant2-toolkit/tree/main/apps/remnant2toolkit/app/(items)/_constants

I love helping people start contributing to code. If you want someone to walk you through this or even do it with you, let me know! I'm happy to help!

Example:

  {
    category: 'ring',
    name: 'Ring of Ordnance',
    imagePath: '/items/rings/ringofordnance.png',
    saveFileSlug: 'Ring_RingOfOrdnance_C',
    id: 'RDi2ad',
    dlc: 'base',
    tags: ['Multiplayer'],
    description:
      "Allows N'Erudian Tech to gradually regenerate while both Deployed or Stowed. While Deployed, Tech will regenerate at 75% of the normal value. While Stowed, Tech regeneration rate is doubled.",
    wikiLinks: [`https://remnant.wiki/Ring_Of_Ordnance`],
    location: { world: `N'Erud`, dungeon: 'World Drop' },
  },