feat(unifi-protect): add configurable doorbell ring timeout

[AlexF090]

Summary

• Adds a Ring Timeout setting (in seconds) to UniFi Protect doorbell cameras with the BinarySensor interface
• Replaces the hardcoded 25 s timeout with the user-configured value in both resetRingTimeout() and the stale-state guard in
  main.ts
• Defaults to 25 s when no value is set or an invalid value is stored
• Updates engine.io, ws, and werift to latest versions (security/stability fixes)
• Bumps transitive package-lock.json dependencies across affected plugins to resolve known CVEs
• Adds .devcontainer configuration for reproducible development environment

Test plan

• Open settings for a UniFi Protect doorbell camera → Ring Timeout setting visible
• Change timeout value → ring event clears binaryState after the configured duration
• Non-doorbell cameras → setting not shown
• Invalid/zero value → falls back to 25 s default
• Server starts cleanly after dependency updates
• Existing HomeKit + Alexa doorbell notifications unaffected (both use one-shot events, independent of timeout duration)