nvim/my-snippets/package.json

{
  "name": "my-snippets",
  "contributes": {
    "snippets": [
      {
        "language": [
          "all"
        ],
        "path": "all.json"
      },
      {
        "language": [
          "cpp"
        ],
        "path": "cpp.json"
      }
    ]
  }
}