Voicd ZTA access

Browser proxy auto-config for reaching the prod and dev ZTA environments through their bastion SOCKS5 tunnels.

Automatic proxy configuration URL: https://pac.dev.voicd.ai/voicd.pac

Setup (SSH tunnels, browser settings, verification) is in Confluence: VO space, Bastion ZTA us-east-1 Access and SOCKS5 Proxy Setup.