docs(team.json): add lannister

[santiagoaloi]

  "santiagoaloi": {
    "discord": "lannister#9474",
    "focus": [
      "[vuetifyjs/docs](https://github.com/vuetifyjs/vuetify/tree/master/packages/docs)"
    ],
    "languages": [
      "Swedish",
      "English",
      "Spanish"
    ],
    "linkedin": "santiagoaloi",
    "location": "Stockholm, Sweden",
    "name": "Santiago Aloi",
    "team": "core"
  }