Improve `hermes keys balance` command to output more information

[ljoss17]

Closes: #2726

Description

The command hermes keys balance only output the balance of the config's gas_price denomination. This PR adds an optional flag --denom which allows the user to specify the denomination desired, as well as a special argument for the new flag all which lists the balance for all denominations.

Testing

In order to test the new flag first setup the environment using gm, with the following gm.toml:

[global]
  add_to_hermes = false
  auto_maintain_config = true
  extra_wallets = 2
  gaiad_binary = "/Users/luca/go/bin/gaiad"
  hdpath = ""
  home_dir = "/Users/luca/.gm"
  ports_start_at = 27000
  validator_mnemonic = ""
  wallet_mnemonic = ""

  [global.hermes]
    binary = "$HOME/.hermes/bin/hermes"
    config = "$HOME/.hermes/config.toml"
    log_level = "info"
    telemetry_enabled = true
    telemetry_host = "127.0.0.1"
    telemetry_port = 3001

[ibc-0]
  ports_start_at = 27010

[ibc-1]
  ports_start_at = 27020

[ibc-2]
  ports_start_at = 27030

[ibc-3]
  ports_start_at = 27040

[node-0]
  add_to_hermes = true
  network = "ibc-0"
  ports_start_at = 27050

[node-1]
  add_to_hermes = true
  network = "ibc-1"
  ports_start_at = 27060

[node-2]
  add_to_hermes = true
  network = "ibc-2"
  ports_start_at = 27070

[node-3]
  add_to_hermes = true
  network = "ibc-3"
  ports_start_at = 27080

Run the following commands:

1. gm start
2. gm hermes config
3. gm hermes keys

The denom specified in the Hermes config.toml file should be stake (gas_price = { price = 0.01, denom = 'stake' }).

The following commands have different results :

1. hermes keys balance --chain ibc-1
   • Outputs the balance in stake for the user specified in the Hermes config.toml (key_name = 'wallet')
2. hermes keys --chain ibc-1 --denom samoleans
   • Outputs the balance in samoleans for the user specified in the Hermes config.toml (key_name = 'wallet')
3. hermes keys --chain ibc-1 --denom all
   • Outputs the balance for stake and samoleans for the user specified in the Hermes config.toml (key_name = 'wallet')
4. hermes keys --chain ibc-1 --denom inventeddenom
   • Outputs an error since the denom inventeddenom doesn't exist

---

PR author checklist:

• [ ] Added changelog entry, using unclog.
• [ ] Added tests: integration (for Hermes) or unit/mock tests (for modules).
• [x] Linked to GitHub issue.
• [ ] Updated code comments and documentation (e.g., docs/).
• [ ] Tagged one reviewer who will be the one responsible for shepherding this PR.

Reviewer checklist:

• [ ] Reviewed Files changed in the GitHub PR explorer.
• [ ] Manually tested (in case integration/unit/mock tests are absent).