fix package generation

[DenisBiryukov91]

move static lib to dev package;
remove unnecessarily set values, they can be passed as flags during cmake .. invocation, i.e.

cmake -DCPACK_DEBIAN_PACKAGE_ARCHITECTURE=...  #(defaults to host one,  btw this is darwin_arm64 for mac, and not just arm64) \
 -DCPACK_RPM_PACKAGE_ARCHITECTURE=... #(defaults to the  host one) \
 -DCPACK_PACKAGE_NAME=... #(defaults to zenohc) \
..

[diogomatsubara]

I tested this PR changes here: https://github.com/eclipse-zenoh/zenoh-c/actions/runs/11596394063/attempts/1 and they work well with PR #781