Catalyst Voting `tally` cli tool

[Mr-Leshiy]

Summary

Implement a separate CLI tool to perform a tally calculations by using catalyst-contest tally function and all the data from the event-db.

Description

• Make this CLI tool under the same Cargo project, so to reuse all catalyst-gateway functionality as a library.
• Arguments for this tool are contest_parameters: DocumentRef, election_secret_key: ElectionSecretKey, event_db_url: Uri
• Use the tally function and resulted TallyInfo object https://github.com/input-output-hk/catalyst-libs/blob/449e15724198e198cd58fbb576ef260d88d2aac8/rust/catalyst-contest/src/tally/mod.rs#L52 to return a tally result.
• Store result in the json file (clarify it with architects).