Add CreateValidator and EditValidator in REST

[preminem]

Summary

add createValidator and editValidator handler in x/staking/client/rest

Problem Definition

REST client lacks these two function contained in CLI

Proposal

1. Add these two handler in x/staking/client/rest/tx.go
2. Add Swagger annotations

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• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
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[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[dauTT]

Hi, I see that @preminem was working on this issue and created a PR to a separate branch. Why the PR request was not merge to the master branch?

[alexanderbez]

Don't bother @dauTT -- the legacy API is being deprecated. However, you can verify that we have these handlers for the gRPC service. If not, feel free to add them!

[tac0turtle]

rest is now gone, these methods are exposed on grpc though.