This makes serde features optional behind a flag that is not enabled
by default. So Deserialize and Serialize implementations and anything
that deals with JSON.
Change-Id: I04830aa3883da13ea99a4a51b28981e8a5ecd426
Reviewed-on: https://cl.snix.dev/c/snix/+/30660
Autosubmit: Brian Olsen <brian@maven-group.org>
Reviewed-by: Florian Klink <flokli@flokli.de>
Tested-by: besadii