[chain] Add a get-node-id flag to gnoland secrets // multi-node related

[r3v4s]

Description

This issue is related to 2️⃣ , 3️⃣ of #1836

As comment from above pr to connect another nodes without seeds or pex, we can use persistent-peers to set peers manually which requires form of nodeID@hostname(or ip addr):port.

For Cosmos there are 2 ways to get this value

1. gaiad tendermint show-node-id
   1.1 CLI level
   1.2 doesn't require actual chain to run
   1.3 requires(calculate or generate node_id from) node_key.json

2. find id from json rpc :26657/status
   1.1 App(Service) level
   1.2 does require actual chain to run (ofc, to run chain node_key is required too)

Personally, I prefer option 1 since it can be done by single command without requiring any rpc node to connect.

For someone who reads this, FYI I felt we need this feature while testing multi node with some of @zivkovicmilos 's wonderful subcommand PR secrets #1593 config #1605