User favorites endpoint change

Following the marketplace migration to D9 the way favorites are stored changed. They now live on the marketplace website. Followup from eclipsefdn/it/websites/marketplace.eclipse.org#212

Previous url request:

GET https://api.eclipse.org/marketplace/favorites?name=rhoettger&page=1&pagesize=10

New url:

GET https://marketplace.eclipse.org/user/rhoettger/favorites

Response example (click to expand)

{
  "mpc_favorites": [
    {
      "content_id": "1963651",
      "count": "207",
      "timestamp": "1698346502"
    },
    {
      "content_id": "5012014",
      "count": "199",
      "timestamp": "1681995052"
    },
    {
      "content_id": "321859",
      "count": "449",
      "timestamp": "1627043142"
    },
    {
      "content_id": "1336",
      "count": "1975",
      "timestamp": "1627042472"
    },
    {
      "content_id": "2925771",
      "count": "202",
      "timestamp": "1627042195"
    },
    {
      "content_id": "393519",
      "count": "60",
      "timestamp": "1528301770"
    },
    {
      "content_id": "3130970",
      "count": "110",
      "timestamp": "1528301764"
    },
    {
      "content_id": "2799080",
      "count": "46",
      "timestamp": "1528301749"
    },
    {
      "content_id": "29591",
      "count": "564",
      "timestamp": "1506608561"
    },
    {
      "content_id": "3528014",
      "count": "7",
      "timestamp": "1506608558"
    },
    {
      "content_id": "3530420",
      "count": "11",
      "timestamp": "1504711487"
    },
    {
      "content_id": "3274405",
      "count": "5257",
      "timestamp": "1496952380"
    },
    {
      "content_id": "192",
      "count": "21",
      "timestamp": "1477927645"
    },
    {
      "content_id": "3035189",
      "count": "22",
      "timestamp": "1472576814"
    },
    {
      "content_id": "150453",
      "count": "72",
      "timestamp": "1472008656"
    },
    {
      "content_id": "87",
      "count": "1022",
      "timestamp": "1461185677"
    }
  ],
  "mpc_list_name": "Favorites for Eclipse Web",
  "user": {
    "uid": "1",
    "name": "webdev",
    "full_name": "webdev",
    "picture": "https:\/\/accounts.eclipse.org\/user\/webdev\/picture",
    "account_url": "https:\/\/api.eclipse.org\/account\/profile\/webdev",
    "html_profile_url": "https:\/\/accounts.eclipse.org\/users\/webdev",
    "mpc_favorites_url": "https:\/\/marketplace.eclipse.org\/user\/webdev\/favorites",
    "html_mpc_favorites_url": "https:\/\/marketplace.eclipse.org\/user\/webdev\/favorites"
  },
  "result": {
    "count": 16,
    "range": {
      "since": 0,
      "until": "1698346502"
    }
  }
}

The new API does not have any pagination, There are about 50 users who have more than 50 favorites (one person have 210) so I guess I'll leave the pagination to the frontend? I can make one on the backend if necessary.