Command to add a key to a configured chain in the relayer

[andynog]

Crate

relayer-cli
relayer

Summary

This feature will implement a command to the relayer that will allow users to add keys to a chain configured on the relayer.

Problem Definition

Right now to test a transaction command (e.g. tx raw) the user needs to specify a flag (-k) which is the key_seed.json file every time a transaction is submitted. When this feature implemented, this flag will not be needed anymore. The users would have to run a keys add command once and that will add the key to the relayer home folder.

Proposal

• Implement command to the relayer to add keys
• Remove the key flag (-k) from the tx raw commands
• The added key specified in the config should be used to sign transactions
• Keys are stored in the relayer home folder (unencrypted)
• Perform regression and integration test
• Bonus: Added keys list command
• Add instructions to add keys on README

Assumptions

• This will not implement a keychain or keyring.
• The keys to be imported should be generated with gaiad and exported (e.g. key_seed.json).
• The key file will be stored in the relayer home folder exactly like they were exported.
• The key name should be specified in the relayer config file (.toml)

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