feat(ripples): add pointer ripples visualizer

[esphynox]

Summary

Implements #110

• add a separate Pointer Ripples visualizer that spawns transient rings at each click location instead of attaching a single ring to the cursor
• add dedicated Ripples settings, settings UI, preview support, app wiring, and localized strings for the new visualizer
• keep the ripples implementation window-based, support multiple simultaneous rings, and tighten internal type boundaries around the new visualizer

Tests

• tuist generate
• xcodebuild test -project Keyty.xcodeproj -scheme Keyty -destination 'platform=macOS'

UI Changes

keyty-click-ring-demo.mov