Add option to silence alarm with volume button

[codebymini]

Overview

This PR introduces enhancements to the LoopFollow app's alarm management system: volume button alarm silencing.

Features Added

Volume Button Alarm Silencing

• Hardware Control: Users can silence active alarms by pressing volume buttons
• Smart Detection: Advanced algorithm that distinguishes intentional button presses from other volume changes
• Configurable: Toggle option in settings to enable/disable this feature
• User Feedback: Haptic feedback confirms successful volume button actions

Technical Implementation

Volume Button Handler

• New File: VolumeButtonHandler.swift (327 lines)
• Enhanced Files: 6 existing files updated
• Key Features:
  • 0.9-second activation delay after alarm starts
  • Comprehensive logging for debugging
  • App lifecycle integration (starts/stops with foreground/background)

Configuration

New Settings

• Volume Button Silencing: Toggle in Alarm Settings (defaults to disabled)

Default Behavior

• Volume button silencing is disabled by default

Testing & Reliability

Volume Button Detection

• Analyzes volume change magnitude (0.02-0.15 range)
• Tracks timing patterns between changes
• Distinguishes discrete button presses from continuous adjustments
• Implements cooldown periods to prevent rapid triggers

[marionbarker]

This has been used in-vivo by two of the developers.

Do a quick test by triggering an alarm and observing that pressing one-time on either a volume button snoozes the alarm when the feature is enable.

EDIT: the description has been updated.
The only issue is the description of the PR says enabled by default, when in fact it is disabled by default. But very first alarm that came on was snoozed right away and log said it was the volume button that stopped it. However, that seemed to be a one-time thing. I then changed to enabled. Quit and restart the app. Then volume buttons snoozed.