[Feature]: Mouse gestures trigger sensitivity setting

### Pre-flight checklist

- [x] I searched existing issues and the [Roadmap](https://github.com/AprilNEA/OpenLogi#roadmap), and this isn't already tracked.

### Problem / motivation

Original Logi Options+ gestures for the mouse (MX Master 3 & 4) feel a bit more sensitive. Meaning, you have to perform less movement of the mouse after pressing the gesture button to trigger an action.
For me this causes unintended gesture button click action activation instead of a gesture as my movement isn't wide enough.

### Proposed solution

Ability to adjust how far you have to move your mouse after pressing the gesture button to trigger an action.

### Alternatives considered

[Mouser](https://github.com/TomBadash/Mouser) app has this nice gesture threshold setting:

### Related area(s)

- [x] GUI
- [ ] CLI
- [x] Button actions / remapping
- [ ] DPI
- [ ] SmartShift
- [ ] Per-application profiles
- [ ] Configuration (TOML)
- [ ] Auto-update
- [ ] Other

### Additional context

_No response_

Start by locating the GUI gesture-handling and button action/remapping entry points; the issue does not name specific files or tests. Trace how mouse movement after the gesture button is interpreted, then verify that a user-adjustable threshold changes the required movement and prevents unintended button actions.

Written by the indexing model from the issue text.