Add monitoring/observability tools

[alvin-reyes]

Request

We need to add some monitoring on the dydx nodes. We do have an existing monitoring so we can just re-use those.

We need to monitor the following:

• dydx node
  • check if the dydx node is down
  • check if the node height is not less 50 blocks

[alvin-reyes]

https://github.com/orgs/Apybara/projects/5