- MbData is now a Pydantic based model.
- Bridge method has been updated to use `service` and `node` from MbData instead of using
separate fields.
- Added `In-Reply-To` to MbData.
- Adapted code using XEP-0277 to work with the changes.
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- file send/receive commands now supports webRTC transfer. In `send` command, the
`--webrtc` flags is currenty used to activate it.
- WebRTC related code have been factorized and moved to `libervia.frontends.tools.webrtc*`
modules.
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