The main motivation behind this change is to get just a little
telemetry information from nodes on the network, namely the version
of Radicle they are running.
This is achieved by rewriting `impl Default for UserAgent` which now
uses the version information provided by the build script also used
in other crates.
Also, a new configuration option `node.userAgent` is added, which
allows users to override the user agent if they so please, or set
the value `null`, which will in turn send the user agent
`/radicle/`, which is not really helpful, and the default prior to
this commit.
Creations of `UserAgent` in the whole workspace is cleaned up. In
order to do that `UserAgent::test` is introduced.
Evaluate the `error!` logging in `radicle-protocol`.
The majority of cases, the `error!` is downgraded to `warn!`. These
cases are generally useful to know if there's an issue, but the
operator cannon necessarily do anything about it.
In a few cases, `debug!` was chosen. These are generally when an error
means that a result is not part of an accumulation, or the system will
eventually correct itself during another event or restart.
If the previous message started with "Error", then the wording is
changed to say "Failed to".
Mostly changes of `use`s and moving components to `radicle-protocol`,
with the goal of just getting `radicle-node` to work on top of the new
`radicle-protocol` crate.
Lorenz Leutgeb
Fintan Halpenny