Context

Implement an CLI for getting the ticket balance of a specific owner x ticketer x content combination. Closes #3626 (closed).

RPC has been added in a separate MR: !6488 (merged)

See the section "3. RPC/CLI for the ticket balance of a ticket-token and account" in the design doc for the specs: https://hackmd.io/@marigold-dev/SyLXJQcJs#3-RPC-for-the-ticket-balance-of-a-ticket-token-and-account

Manually testing the MR

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Provide automatic testing (see the testing guide).
For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
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Edited Oct 25, 2022 by Raphaël Cauderlier