OpenAMP apps -static versions do not link to libmetal statically (LInux userspace)

[wmamills]

When building the Linux user space apps (-DWITH_APPS=ON ) the apps are build in -shared and -static versions.
The shared versions links against the .so files of both open-amp and libmetal.

The -static version uses the static library for open-amp but still links to the shared library of libmetal.

Thus the user needs to install the libraries to the system directories or use LD_LIBRARY_PATH to run either type of app.
Surly the point of having the -static version is to make the apps easier to run and debug.

The cmake file should be updated to allow libmetal to be statically linked as well.
This may make the open-amp make a touch messier but it seems worth it.

[github-actions]

This issue has been marked as a stale issue because it has been open (more than) 45 days with no activity.