Small fix to replicate the topic received with the topic sent.

In order to simplify testing with a terminal, I have added couple of
simple nodes in the node-hub.

To use:
```bash
cd examples/terminal-dataflow
dora build dataflow.yml
dora start dataflow.yml

# Terminal A
terminal-print

# Terminal B
pyarrow-sender


```

Note that there might be issues with stopping the dataflow and you might
need to use `dora destroy`

# Video example

[Screencast from 2024-08-09
12-41-17.webm](https://github.com/user-attachments/assets/04db8e4f-652e-42a9-a42e-6c49d2ff9fae)

By versioning the `dora-message` crate individually, we can use the
semver rules to encode which versions are compatible. This way, we can
allow different versions of dora to work together (e.g. CLI version can
be different than node API version), as long as the message formats are
compatible. Breaking message format changes are signaled by a
semver-incompatible release of `dora-message`. For example, 0.4.0 is not
compatible with 0.3.5.

One alternative approach could be to use the main version to signal
compatibility, i.e. the common version that we use for all dora crates.
This has the disadvantage that we might need to bump the minor version
of the main dora crate every time we want to change the message format
in a breaking way. As we still expect semi-regular breaking changes to
the message format in the near future, we want to avoid this churn. Once
we consider the message format more stable, we plan to revisit this
approach.

Fixes https://github.com/dora-rs/dora/issues/504

TODO

- [x] Update release script: We should not try to publish the
`dora-message` crate if there is no new version.
- [x] Relax version checks to only compare major/minor version
(according to semver compatibility rules).