reward tokens

curl --request GET \
  --url https://api-staging.boost.xyz/metrics/reward-tokens

[
  {
    "id": "<string>",
    "name": "<string>",
    "symbol": "<string>",
    "type": "<string>",
    "imageUri": "<string>",
    "contractAddress": "<string>",
    "chainId": 123,
    "network": {
      "id": "<string>",
      "name": "<string>",
      "alchemyId": "<string>"
    }
  }
]