ErgoDEX API "all pool stats" should return pool_id in response

[Eeysirhc]

Issue: there are two API calls which require the p1 parameter (assuming it is pool_id), "pool locks" and "pool stats". Without this information, API users will not know where to get that data and excludes them from using this service.

Currently you can get the pool_id by...

1. Running backend DB service and looking up the pool_id from pools table
2. Ask someone else for the list (https://github.com/Eeysirhc/ergodex-price-app/blob/main/ergodex-pool_id.csv)

Proposal: include the p1/pool_id value in the response for "all pool stats" API call (which I think makes the most sense).