Remove kes cli crate

[paweljakubas]

As clap is the source of problems for libraries that use pallas and that it might be not the best place to have CLI app, this PR removes kes-cli along with the traces that point to it

[paweljakubas]

FYI @scarmuega

[Copilot]

Pull Request Overview

This PR removes the kes-cli crate from the Pallas workspace to address dependency conflicts with clap that affect libraries using Pallas. The removal also cleans up references to the CLI tool in documentation.

• Removes the entire kes-cli crate directory and its implementation
• Updates workspace configuration to exclude the removed crate
• Removes CLI documentation and examples from the KES README
• Cleans up unused imports in validation code

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Removes kes-cli from workspace members
pallas-crypto/src/kes/README.md	Removes CLI documentation section and Cardano CLI interoperability examples
pallas-validate/src/phase1/conway.rs	Removes unused imports from pallas_traverse
kes-cli/ (entire directory)	Complete removal of CLI crate including source code, tests, and configuration

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