feat: add v11_1 handler

[hoank101]

Summary of changes

Report of required housekeeping

• Github issue OR spec proposal link
• Wrote tests
• Updated API documentation (client/lcd/swagger-ui/swagger.yaml)
• Added a relevant changelog entry: clog add [section] [stanza] [message]

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(FOR ADMIN) Before merging

• Added appropriate labels to PR
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)
• Confirm added tests are consistent with the intended behavior of changes
• Ensure all tests pass

[StrathCole]

@hoank101 do we need the 11_1 because of testnet only? could we then remove v11 on mainnet?

[hoank101]

do we need the 11_1 because of testnet only? could we then remove v11 on mainnet?

yeah, I just removed

[StrathCole]

do we need the 11_1 because of testnet only? could we then remove v11 on mainnet?

yeah, I just removed

The question was if it can be removed or if testnet upgrade prop will fail then. I remember an issue with the tax upgrade I did in a similar situation.

[hoank101]

The question was if it can be removed or if testnet upgrade prop will fail then. I remember an issue with the tax upgrade I did in a similar situation.

yeah, I think will remove when upgrade mainnet, or keep it, a litter bit redundant but ok