Improve CLI tx output

[robert-zaremba]

Summary

Currently CLI tx command output doesn't display a MsgService result.
User experience is as good as easy it is to interact with the system.

Problem Definition

CLI query output is pretty informative and well formatted.

CLI tx output is not well formatted and doesn't display the msg processing result. Below is an example of tx bank send:

{"height":"607","txhash":"E9FEB1E120A900716413CFB5F6EDFFFB96E751B148A9692DB933A22951ABC801","codespace":"","code":0,"data":"0A060A0473656E64","raw_log":"[{\"events\":[{\"type\":\"message\",\"attributes\":[{\"key\":\"action\",\"value\":\"send\"},{\"key\":\"sender\",\"value\":\"regen:18yrp8exmrp396enlawyjau8ldsvm55mfwn0q5g\"},{\"key\":\"module\",\"value\":\"bank\"}]},{\"type\":\"transfer\",\"attributes\":[{\"key\":\"recipient\",\"value\":\"regen:1ky29knsw3l9veuvw6ehk9s0jxqkdpuuaet0tlz\"},{\"key\":\"sender\",\"value\":\"regen:18yrp8exmrp396enlawyjau8ldsvm55mfwn0q5g\"},{\"key\":\"amount\",\"value\":\"1000stake\"}]}]}]","logs":[{"msg_index":0,"log":"","events":[{"type":"message","attributes":[{"key":"action","value":"send"},{"key":"sender","value":"regen:18yrp8exmrp396enlawyjau8ldsvm55mfwn0q5g"},{"key":"module","value":"bank"}]},{"type":"transfer","attributes":[{"key":"recipient","value":"regen:1ky29knsw3l9veuvw6ehk9s0jxqkdpuuaet0tlz"},{"key":"sender","value":"regen:18yrp8exmrp396enlawyjau8ldsvm55mfwn0q5g"},{"key":"amount","value":"1000stake"}]}]}],"info":"","gas_wanted":"200000","gas_used":"57493","tx":null,"timestamp":""}

In contrast, querying for the transaction above will display a nicely formatted output:

./simapp q tx E9FEB1E120A900716413CFB5F6EDFFFB96E751B148A9692DB933A22951ABC801

code: 0
codespace: ""
data: 0A060A0473656E64
gas_used: "57493"
gas_wanted: "200000"
height: "607"
info: ""
logs:
- events:
  - attributes:
    - key: action
      value: send
    - key: sender
      value: regen:18yrp8exmrp396enlawyjau8ldsvm55mfwn0q5g
...

Proposal

In Stargate MsgService transactions have a well defined result. Proposals:

1. Let's add message results to the transaction output
2. Let's add a new flag: --json-out . When set to false (default) it will display the transaction output using nicely formatted YAML - in the same way we display cli q results. When --json-out=true it will display the output using machine readable JSON (as it's today) wit the message results.

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[alexanderbez]

ACK. But no need to introduce a new flag. We already have an output flag.