v0.5.0

• Added bridge config template for Google Messages.
• Added bridge type in bridge state info when setting up bridges with config templates.
  • This is preparation for integrating self-hosted official bridges into the Beeper apps, like login via the Chat Networks dialog and Start New Chat functionality.
• Fixed typo in WhatsApp config template.
• Updated config templates to enable websocket pinging so the websockets would stay alive.
• Moved isSelfHosted flag to top-level bridge state info.