feat(logi): support HID++ button gestures

[LJAYi]

Summary

• route Logitech HID++ button events through the existing gesture state machine
• support the M720 MultiPlatform Gesture button with four movement directions and scroll-wheel combos
• keep the gesture button's ordinary click binding when no gesture threshold is reached
• register actionable gesture triggers with the Logi usage/diversion system
• move gesture configuration into expandable rows in the Buttons preferences pane
• fix rule deletion, duplicate recording feedback, and M720 back/forward button actions

Implementation notes

HID++ button events do not carry a CGEvent, so GestureProcessor now accepts the shared InputEvent representation and keeps replay context optional. Native mouse triggers still replay their original click when appropriate, while HID++ triggers fall back to the configured button action.

Only enabled bindings with a real action reserve and divert a Logitech CID. Trigger modifiers are normalized before persistence and comparison so state flags such as Caps Lock cannot create visually identical duplicate rules.

Testing

• tested on a Logitech M720 with the MultiPlatform Gesture, Back, and Forward buttons
• verified gesture-button click plus up/down/left/right movement actions
• scripts/qa/lint-logi-boundary.sh
• 181 focused tests across GestureProcessorTests, ButtonBindingTests, LogiUsageBootstrapTests, and InputProcessorTests
• unsigned Debug build succeeds with CODE_SIGNING_ALLOWED=NO

Screenshot

[LJAYi]

I tested this with a Logitech M720 and added HID++ support for its MultiPlatform Gesture button, including directional gestures, inline configuration, and Back/Forward button fixes.

If these changes are incorporated into Caldis#922, I’d appreciate it if my commit authorship could be preserved when merging. Thanks!