text: Title: Add CLI options explanation
  Body: ## Description
  
  To add explanations to each option. To tell the user what the option is for. Exactly how `help` has: `Show this message and exit.`
  
  ```bash
  scanapi --help
  Usage: scanapi [OPTIONS]
  
    Automated Testing and Documentation for your REST API.
  
  Options:
    -s, --spec-path PATH
    -o, --output-path TEXT
    -c, --config-path TEXT
    -r, --reporter [console|markdown|html]
    -t, --template TEXT
    --log-level [DEBUG|INFO|WARNING|ERROR|CRITICAL]
    --help                          Show this message and exit.
  ```
  
  Options:
  
  - [ ] --spec-path
  - [ ] --output-path
  - [ ] --config-path
  - [ ] --reporter
  - [ ] --template
  - [ ] --log-level