api: Include validator's shares under escrow

[aefhm]

SUMMARY

API user should be able to make a request for a particular validator pool's shares as well as amount.

curl "https://nexus.oasis.io/v1/consensus/validators/oasis1qq3xrq0urs8qcffhvmhfhz4p0mu7ewc8rscnlwxe" | jq

{
  "active": true,
  "current_commission_bound": {
    "epoch_end": 0,
    "epoch_start": 0,
    "lower": 0,
    "upper": 20000
  },
  "current_rate": 5000,
  "entity_address": "oasis1qq3xrq0urs8qcffhvmhfhz4p0mu7ewc8rscnlwxe",
  "entity_id": "eZuacXy5s3/nolB/E3gF4vqUYdvfOlVaaBXGfZcGwKc=",
  "escrow": "183178293673959461",
  "media": {
    "name": "stakefish"
  },
  "node_id": "SQZZd1wsWXdFsqswUoh6hZtmzu+ejuSnrGeHtgIBJDo=",
  "status": true
}

returns the escrow which is total amount but not shares.

ISSUE TYPE

• Feature Idea

COMPONENT NAME

API and potentially analyzer if this information is not already indexed.

ADDITIONAL INFORMATION

At least one partner would like to make a single API request to obtain necessary information such as total number of shares in escrow pool.

[aefhm]

@Andrew7234 pointed out that the delegation object has this on an individual basis. https://github.com/oasisprotocol/nexus/blob/09ffeb48fb72a610c3fc827b057b90cf269cd62b/api/spec/v1.yaml#L1410-L1415

[aefhm]

Partner was unblocked. We can deprioritize this.