feat: API for deals tracked per allocator

[bajtos]

• deps: upgrade spark-api to latest
• feat: API for deals tracked per allocator

Example request:

GET /allocator/f03015751/deals/eligible/summary

Example response:

{
  "allocatorId": "f03019831",
  "dealCount": 117596,
  "clients": [
    {
      "clientId": "f02056762",
      "dealCount": 64674
    },
    {
      "clientId": "f03146638",
      "dealCount": 21405
    }
  ]
}

Links:

• https://github.com/filecoin-station/spark/issues/78
• https://github.com/filecoin-station/spark-api/pull/393

[bajtos]

@juliangruber hindsight please 🙏🏻