feat(client/v2): signing (backport #17913)

[mergify]

This is an automatic backport of pull request #17913 done by Mergify.
Cherry-pick of b62301d has failed:

On branch mergify/bp/release/v0.50.x/pr-17913
Your branch is up to date with 'origin/release/v0.50.x'.

You are currently cherry-picking commit b62301d9d.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   client/flags/flags.go
	modified:   client/tx/factory.go
	modified:   client/tx/tx.go
	modified:   client/v2/Makefile
	modified:   client/v2/README.md
	modified:   client/v2/autocli/common.go
	modified:   client/v2/autocli/flag/messager_binder.go
	deleted:    client/v2/autocli/flags.go
	modified:   client/v2/autocli/keyring/interface.go
	modified:   client/v2/autocli/keyring/no_keyring.go
	modified:   client/v2/autocli/msg.go
	modified:   client/v2/autocli/query.go
	modified:   client/v2/autocli/query_test.go
	deleted:    client/v2/autocli/testdata/help-deprecated-msg.golden
	modified:   client/v2/autocli/testdata/help-echo-msg.golden
	modified:   client/v2/autocli/testdata/help-toplevel-msg.golden
	new file:   client/v2/autocli/testdata/msg-output.golden
	new file:   client/v2/internal/flags/flags.go
	modified:   codec/bench_test.go
	modified:   codec/types/any.go
	modified:   codec/types/interface_registry.go
	new file:   codec/types/util.go
	new file:   crypto/keyring/autocli.go
	modified:   crypto/keyring/keyring.go
	modified:   types/tx_msg.go
	modified:   x/auth/signing/sig_verifiable_tx.go
	modified:   x/bank/types/msgs.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   CHANGELOG.md
	both modified:   client/v2/autocli/app.go
	both modified:   client/v2/autocli/builder.go
	both modified:   client/v2/autocli/common_test.go
	both modified:   client/v2/autocli/flag/address.go
	both modified:   client/v2/autocli/flag/builder.go
	both modified:   client/v2/autocli/msg_test.go
	both modified:   client/v2/go.mod
	both modified:   client/v2/go.sum
	both modified:   simapp/simd/cmd/root.go
	both modified:   simapp/simd/cmd/root_v2.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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