Add CLI for Sanction Gov Props

[SpicyLemon]

Summary

Add CLI commands for creating and submitting the sanction module's governance proposals.

Problem Definition

The sanction module's governance proposal endpoints don't have any CLI helpers. With gov.v1, adding commands to tx gov is deprecated in favor of tx commands in the respective modules that send a MsgSubmitProposal. These commands weren't in the initial sanction module though.

Proposal

Add commands for each sanction module endpoint under tx sanction ....

• The commands should create their respective Msg, then wrap it in a MsgSubmitProposal and send that.
• The authority should be populated automatically. There is no reason to ever have it be something other than the one magic value.
• There should be a --deposit flag for indicating the amount of deposit to include initially.
• There should be a --metadata flag for populating the proposal's metadata.
• If they've been added to the MsgSubmitProposal by the time this issue is addressed, there should also be --title and --description flags for those two proposal fields.
• The sanction and unsanction commands should just take in the list of addresses.
• The update params command should take in the two coins amounts.
• The help text for each should indicate that it's submitting a governance proposal.

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For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned

[nullpointer0x00]

This was completed with PR provenance-io/cosmos-sdk#510