froggeR v0.2.0

• Renamed default parameter to custom_yaml in quarto_project() and write_quarto() for clarity.
• Refactored froggeR_settings() to use YAML for configuration storage.
• Changed how settings are stored and retrieved. Settings are now stored in ~/.config/froggeR/config.yml.
• Improved user interaction in froggeR_settings() function.
• Modified quarto_project() and write_quarto() to use the new YAML-based settings.
• Added .check_settings() function to provide user feedback on incomplete settings.
• Updated .update_variables_yml() function to handle both creation and updating of _variables.yml.
• Improved error handling and user feedback in various functions.
• Removed load_data() function and related utilities.
• Updated documentation and examples to reflect new functionality and improve clarity.
• Revised README for better explanation of package workflow and features.
• Updated pkgdown site structure to reflect current package organization.