feat(buttons): add mouse gesture navigation

[tarnish233]

Motivation

Mouse-button mappings cannot currently reproduce the gesture-button workflow provided by Logi Options+: click the assigned button for Mission Control, or hold it and move the mouse for directional navigation.

Closes #949
Related to #917

What changed

• Add a localized Gesture Navigation preset under Function Keys rather than the synthetic mouse-button actions.
• Support both native CGEvent mouse buttons and Logi HID++ buttons through the existing unified InputProcessor path.
• Activate mouse-motion interception only while a gesture button is held, without freezing or rewriting pointer movement.
• Map the preset to:
  • click → Mission Control
  • move up → Mission Control
  • move down → App Exposé
  • move left → switch one Space to the right
  • move right → switch one Space to the left
• Defer synthetic shortcut posting until after the event-tap callback returns, avoiding callback re-entry and tap timeouts.
• Make gesture navigation deliberate and one-shot:
  • each button hold can commit at most one directional action;
  • continued movement, pauses, and reversals are ignored after the first direction commits;
  • releasing and pressing the gesture button starts a fresh gesture session;
  • this prevents one physical swipe from accidentally moving across multiple Spaces.
• Keep existing ButtonBinding identifiers and persistence format unchanged.

Validation

• Full Debug test suite on the current PR head:
  • 566 tests executed
  • 3 environment-gated tests skipped
  • 0 failures
• git diff --check
• Manual validation by the issue author with the Debug build:
  • binding and menu placement;
  • click action;
  • all four directions;
  • corrected left/right mapping;
  • one action per button hold;
  • confirmed improved feel without accidental repeated Space movement.

Compatibility / risk notes

• Uses public CGEvent and existing system-shortcut execution paths only; no private multitouch APIs.
• Uses APIs available within Mos's macOS 10.13 deployment target.
• Does not change Accessibility prompts, defaults keys, or persisted binding schemas.

[tarnish233]

我这边目前测试了 logi m750 和 迈从 A5 鼠标都是正常的，代码是 codex 写的

[tarnish233]

改成一次按住最多触发一次了，之前偶尔会误触发，求合并