The motivations for this change are:
- easy debugging of DDS messages for yazi and plugin developers
- allow external applications to monitor yazi events.

In neovim specifically, there is a limitation that the stdout and stderr
streams cannot be monitored when displaying an embedded terminal
application. A second yazi instance could theoretically be started, but
the ui does currently not work when there is no screen to draw on.

- don't start a new server. Instead, crash if the server is not running.
- remove support for listening for a specific peer. The protocol doesn't
  support it and it cannot be made to work.
- if the existing yazi closes, this cannot be detected, and the
  connection is never reestablished. Maybe this can be made to work in a
  future commit.

If the connection cannot be made when starting, the client will fail and
not reconnect. However, if the connection is lost after the client has
started, it will forever attempt to reconnect with a 1s delay.

Also clean up the implementation by removing previous mistakes