Update packages

[oleander]

Close #48

[Copilot]

Pull Request Overview

This PR updates the project’s argument parsing framework by replacing structopt with clap, aligning the code with the latest package recommendations.

• Replaces all structopt usages with clap's Parser and Subcommand macros
• Updates command-line attribute syntax in both src/main.rs and src/hook.rs
• Adjusts Cargo.toml to remove structopt and add clap as a dependency

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

File	Description
src/main.rs	Replaced structopt with clap for CLI parsing
src/hook.rs	Updated CLI attributes from structopt to clap
Cargo.toml	Removed structopt dependency, added clap dependency