feat: enhance Sensibo integration with improved error handling and configuration

[thetonto]

• Updated package.json to include linting and testing scripts, and upgraded dependencies.
• Modified sensibo.html to improve API configuration handling and user experience.
• Refactored sensibo.js to enhance API request handling, error management, and response parsing.
• Updated test files to dynamically load credentials and improve test coverage for Sensibo nodes.
• Added GitHub Actions CI workflow for automated testing and linting.
• Introduced ESLint configuration for consistent code quality across the project.