The main goal of the patch is to improve the upload experience of repositories that are larger in size, e.g. 300MB and 3GB.

This is achieved by a series of changes, outlined in each commit, and summarised here:

1. Dynamic timeouts for fetching by passing the timeout through the use Io::Fetch and Control::Open. This removes the DEFAULT_CHANNEL_TIMEOUT and we now default to FETCH_TIMEOUT when it’s not specified.
2. The Emitter is moved to the radicle crate for re-use in radicle-fetch and radicle-node.
3. Introduce events for the upload-pack process.
4. Change the call method for the socket stream to use crossbeam-channel so that events can be subscribed to indefinitely but received with a timeout.
5. The default value of FETCH_TIMEOUT is increased to 1 hour to allow the larger repositories to finish announcing and being cloned by seeds when initialised.
6. Improve rad init to report the upload-pack events.

Changes:

• remove timeout from control frame

Changes:

• Use LineIter for streaming semantics
• Improve the Progress type to be an enum
• Minor clean up from other review feedback

Changes:

• Simplify error reporting
• Remove logging of RemoteProgress
• Simplify UploadPack event enum

Changes:

• remove unused upload pack event errors

Changes:

• rebased
• fixed documentation