…onfiguration.

Refactored Select_Field sanitization to handle non-string values and filter out invalid options. Removed redundant is_admin() check in Settings_Page::init. Added comprehensive unit tests for Settings_Page to verify initialization, hook registration, tab selection, and asset loading behaviors.

Added detailed admin settings documentation in docs/admin.md and updated README.md with references to admin architecture and extension hooks. Modified Basic_Configuration_Tab to allow fields to be filtered via 'wpgraphql_logging_basic_configuration_fields', enabling easier extension of admin settings.

Adds --ssl-mode=DISABLED to mysql and mysqladmin commands in install-test-env.sh to prevent SSL connection issues during database setup.

- Refactored Settings_Tab_Interface to use static methods for tab name and label,
- Updating all usages and tests accordingly.
- Added Config_Settings_Service to encapsulate retrieval and parsing of logging configuration, with comprehensive unit tests for config value helpers and sanitization.
- Improved data sampling options and made Plugin::setup protected.

This will help with integrating should we log a request or not.