zenoh: Add zenoh recipe for zenoh router and C client library

Add recipe for zenohd and zenoh-c

zenohd: installs the zenohd binary which is the executable for 
the zenoh router and provides support for zenoh communication 
routing and storage capabilities. 
Tested by running: `zenohd --plugin-search-dir /usr/lib`

zenoh-c: Zenoh C client library into a Yocto recipe that can be 
invoked as needed by applications.
The library has been tested and the zenoh primitives such as: pub, 
sub, put, get, scout.. appear to be working correctly.

Closes: https://git.ostc-eu.org/OSTC/planning/core-os/-/issues/242



Signed-off-by: Francesco Pham <francesco.pham@huawei.com>
.