Add relayer init CLI command.

[dzmitryhil]

Description

Add relayer init CLI command.

Reviewers checklist:

• Try to write more meaningful comments with clear actions to be taken.
• Nit-picking should be unblocking. Focus on core issues.

Authors checklist

• Provide a concise and meaningful description
• Review the code yourself first, before making the PR.
• Annotate your PR in places that require explanation.
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This change is 

[ysv]

Reviewed 5 of 5 files at r1, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @dzmitryhil, @miladz68, and @wojtek-coreum)

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relayer/cmd/cli/cli.go line 58 at r1 (raw file):

// StartCmd returns the start cmd.
func StartCmd() *cobra.Command {

this Cmd is not implementation but just an example of how we can pass keyring password ?

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relayer/cmd/cli/cli.go line 141 at r1 (raw file):

func addKeyringFlags(cmd *cobra.Command) {
	cmd.PersistentFlags().String(flags.FlagKeyringBackend, flags.DefaultKeyringBackend, "Select keyring's backend (os|file|kwallet|pass|test)")
	cmd.PersistentFlags().String(flags.FlagKeyringDir, path.Join(DefaultHomeDir, "keys"), "The client Keyring directory; if omitted, the default 'home' directory will be used")

--home passed to this command or HOME for the user ?

[dzmitryhil]

Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @miladz68, @wojtek-coreum, and @ysv)

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relayer/cmd/cli/cli.go line 58 at r1 (raw file):

Previously, ysv (Yaroslav Savchuk) wrote…

this Cmd is not implementation but just an example of how we can pass keyring password ?

For now - yes. I updated the logger in the CLI in general that's why updated it here as well.

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relayer/cmd/cli/cli.go line 141 at r1 (raw file):

Previously, ysv (Yaroslav Savchuk) wrote…

--home passed to this command or HOME for the user ?

The if you provided --home than home path you provided, if not $HOME.

[dzmitryhil]

Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @miladz68, @wojtek-coreum, and @ysv)

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relayer/cmd/cli/cli.go line 141 at r1 (raw file):

Previously, dzmitryhil (Dzmitry Hil) wrote…

The if you provided --home than home path you provided, if not $HOME.

Default path will be: $HOME/.coreumbridge/keys or provided path my the flag.

[ysv]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @miladz68 and @wojtek-coreum)

[miladz68]

Reviewed 5 of 5 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @wojtek-coreum)