Add service architecture and NVDA API proxies to ART
- Introduce core services for config, logging, speech, UI, language, nvwave, and globalVars
- Create proxy modules allowing addons to seamlessly use NVDA APIs from ART
- Restructure to run each addon in its own isolated process for better stability
- Add synthesizer driver support with audio streaming to NVDA core
- Implement handshake protocol for reliable process initialization
- Set up proper package structure separating core services from runtime components
- Enable extension point handlers to work across process boundaries
- Add proper logging infrastructure with per-runtime log files
