JSON-LD / RDF support

Issue không nêu tên các tệp trong repository, các bài kiểm thử hoặc các entry point. Hãy bắt đầu bằng cách truy vết cách API xử lý các header Accept và các định dạng phản hồi, sau đó xác định biểu diễn JSON-LD và phạm vi của ontology. Công việc được xem là hoàn tất khi có một kế hoạch triển khai đã được thống nhất và hỗ trợ cho dạng JSON-LD được yêu cầu.

I think it would be valuable to be able to use a PokéAPI endpoint as a canonical URL within RDF linked data, so other RDF documents can refer to Pokémon concepts. For example, someone could make character bios using JSON-LD that look like:

{
  "@context": {
    "@vocab": "https://schema.org/",
    "pkmn": "https://pokemonkg.org/ontology/version/1.0.0"
  },
  "@id": "<...>",
  "@type": "Person",
  "name": "Meowth",
  "description": "Team Rocket's Meowth",
  "url": "https://bulbapedia.bulbagarden.net/wiki/Meowth_(Team_Rocket)",
  "pkmn:species": { "@id": "https://pokeapi.co/api/v2/pokemon-species/meowth" },
  "gender": { "@id": "https://schema.org/Male" },
  "memberOf": {
    "@type": "Organization",
    "name": "Team Rocket",
    "url": "https://bulbapedia.bulbagarden.net/wiki/Team_Rocket"
  },
  "knows": {
    "@id": "<...>",
    "@type": "Person",
    "name": "Meowzie",
    "url": "https://bulbapedia.bulbagarden.net/wiki/Meowzie",
    "pkmn:species": { "@id": "https://pokeapi.co/api/v2/pokemon-species/meowth" },
    "gender": { "@id": "https://schema.org/Female" }
  }
}

This would be very useful for creating original characters in a somewhat-standard machine-readable format, e.g. for use in TTRPG campaigns.

Some notes:

• There is a readily available Pokémon ontology for RDF, but we could extend it or make our own for PokéAPI if it doesn't have all the features we need.
• In the example above, I used the Person type from Schema.org (https://schema.org/Person) as it integrates with the rest of the Schema.org ontology - for example, the CreativeWork.character property takes a Person as its value to represent a character within a creative work. However, the Comic Book Ontology also provides a dedicated Character type (https://comicmeta.org/cbo/#Character).

Similar to MusicBrainz, a client could request the JSON-LD for a Pokémon concept by modifying its HTTP request in the following form:

GET /api/v2/pokemon-species/meowth HTTP/2
Host: pokeapi.co
Accept: application/ld+json

or alternatively append ?format=json-ld to the resource URL.