bevy_net_backend 0.2.0

Talk to your game's own backend from Bevy: HTTPS JSON requests, uploads and downloads to a file, (feature `ws`) named WebSocket connections, (feature `oauth`) OpenID Connect desktop sign-in and (feature `ssh`, admin tools) SSH commands and SFTP, typed answers as Bevy messages, exactly one answer per request, game-supplied credentials with redacted secrets, proxy and certificate settings, no tokio unless you enable `ssh`, and fake transports for tests.