Generic Combo Classes Refactor

• API Update: Updated all four GenericCombo classes (GenericCombo, GenericComboWithFilter, GenericComboWithMultiFilter, and GenericComboWithCustomFilter) to use std::span for passing ranges (values, strings, tooltips, and filters) instead of lambdas. Removed ValueLambdaT (and potentially other lambda types) as the classes now directly accept value ranges via std::span, simplifying the interface, reducing runtime overhead, and improving clarity with precomputed data.
• Type Safety: Added a requires clause to GenericComboWithMultiFilter (and potentially other relevant classes) to ensure the filter type supports an update method with a vector of values from the provided range, enhancing compile-time validation.

Filter System Refactor

• New Filter Class: Replaced ff_8::filter_old with ff_8::filter for Compact and Flatten in Selections.hpp, modernizing the filter implementation.
• Updated Filter Checks: Changed filter checks in tile.cpp from map->filter().deswizzle.enabled() to map->filter().enabled<ff_8::FilterTag::Deswizzle>() (and similar for FullFileName and Swizzle) for type-safe, templated access.
• Improved Filter Updates: In batch.cpp, updated filter updates to use templated update method with chained .enable() calls (e.g., filters.update<ff_8::FilterTag::Deswizzle>(...)), improving consistency and conciseness.
• Major Filter Overhaul: Significant changes in filter.hpp (350 additions, 240 deletions) to support the new filter class and std::span-based API.

Benefits

• Type Safety: Templated methods and requires clause ensure compile-time validation.
• Performance: std::span reduces overhead by avoiding lambda calls and data copies.
• Clarity: Direct range passing via std::span simplifies the API across all GenericCombo classes.
• Consistency: Unified filter class and methods improve maintainability.
• Modern C++: Adopts C++20 features like std::span and requires.