[Bug] pkgconfig is generated with wrong lib name

[adv4ncr]

Describe the bug

When building the package in Linux, the pkgconfig yields a liblibzenohc library name:

zenoh-c/install/zenohc.pc.in

Line 8 in 8aba3d1

Libs: -L${prefix}/@CMAKE_INSTALL_LIBDIR@ -l@LIBNAME@

This is the erroneous line after building: Libs: -L${prefix}/lib -llibzenohc
This is how it should look like: Libs: -L${prefix}/lib -lzenohc

To reproduce

Standard Linux build

System info

• Platform: [Arch / Ubuntu 22.04.5 LTS]
• Zenoh commit: [8aba3d1]