Renamed all instances of the `UseMySql` method to `UseOracle` in the `OracleProvidersExtensions` class. This aligns the method names with Oracle-specific functionality. Additionally, marked the class with `PublicAPI` attribute for better code documentation.
* Add configuration actions for DbContext options builders
Introduce a configuration delegate parameter for each database provider's `Use*` methods, enhancing customization. This change affects MySql, SqlServer, Sqlite, PostgreSql, and Oracle providers, allowing more flexible DbContext configuration.
* Add support for connection strings as functions
This update introduces new overloads to allow passing connection strings as functions that take IServiceProvider. This enhances flexibility by enabling dynamic connection string resolution at runtime. All major database providers (MySQL, SQL Server, SQLite, PostgreSQL, and Oracle) have been updated accordingly.
