feat(macos): support physical scroll wheel tilt and reduce remapping latency

[Archetipo95]

This PR enables physical scroll/tilt wheels (like the Logitech MX Anywhere 2 left/right tilt) to function reliably on macOS even when Ignore trackpad is enabled, and adds support for ultra-low horizontal scroll thresholds to eliminate delay when triggering mapped keystrokes.

Key Changes

1. Phase-Aware Trackpad Filtering: In core/mouse_hook_macos.py, we inspect kCGScrollWheelEventScrollPhase and kCGScrollWheelEventMomentumPhase. Trackpads and Magic Mice always generate gesture events with non-zero phases, while traditional mice/tilt-wheels do not (both phases are 0). We now verify if these phases are non-zero before filtering, letting physical wheel tilt inputs pass through even when ignore_trackpad is enabled.
2. Lower Horizontal Scroll Threshold Limit: In core/engine.py, we lowered the minimum threshold cap to 0.01 (from 0.1), allowing users to specify a threshold like 0.1 or lower in their configuration. This fires mapped actions instantly on the very first tilt event.
3. Split joint hscroll UI hotspots: We split the joint hotspot into hscroll_left and hscroll_right using the "mapping" type instead of "hscroll" in core/logi_device_catalog.py, allowing them to be mapped separately in the UI.
4. Validation and test updates: Updated core/config.py type validation to allow floats for numeric default config templates, and updated the mock setups in tests/test_mouse_hook.py and tests/test_device_layouts.py.