[Feature]: Add Gesture config

[lorenuars19]

Pre-flight checklist

• I searched existing issues and the Roadmap, and this isn't already tracked.

Problem / motivation

Gesture thresholds / deadzone and hold duration are defined as 'Magic' constants

Proposed solution

include :

• GESTURE_SWIPE_THRESHOLD
• GESTURE_SWIPE_DEADZONE
• GESTURE_HOLD_FOR_SWIPE

in config model

Alternatives considered

No response

Related area(s)

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

Additional context

config, gesture

[linear-code]

OLG-83