Update documentation screenshots

[Disane87]

Description

The documentation could benefit from updated and comprehensive screenshots to help users better understand the integration's features and setup process.

Tasks

• Take screenshots of the integration setup/config flow
• Capture screenshots of all available sensors and their data
• Add screenshots of the Home Assistant UI showing the integration in action
• Document camera entity screenshots (if applicable)
• Add screenshots of service calls and their usage
• Ensure screenshots are in a consistent style and resolution
• Update README.md and other docs with new screenshots
• Store screenshots in appropriate directory (e.g., resources/images/ or docs/images/)

Additional Context

Good documentation with visual examples significantly improves the user experience and reduces support questions. Screenshots should show:

• Clean, professional looking Home Assistant dashboards
• Clear examples of sensor data
• Setup wizards and configuration options
• Integration of Spoolman data in the UI

Acceptance Criteria

• All major features are visually documented
• Screenshots are clear and high quality
• Images are properly referenced in documentation
• File sizes are optimized for web viewing