`ark-cli`: CI Tests

## Description:
`ark-cli` crate currently lacks CI workflows.
## Motivation:
Testing ark-cli is essential as it is the interface for utilizing various functionalities provided by `ark-rust` crates.
Without proper testing, there's a risk of undetected issues between different crates.
## Proposal:
1. **Basic Use Case Shell Scripts:**
- Shell scripts that showcase core `ark-cli` functionalities.
- These scripts should represent typical user scenarios for interacting with `ark-cli`.
2. **Issue #21 Test Script (upon merge):**
- This script should verify `ark-cli watch`