including following changes:
- Linux build scripts from SuperSlicer project;
- Update BuildLinux dev dependencies, remove unused bits;
- Update BuildLinuxImage to use nproc for cpus;
- CMake: render BuildLinuxImage and build_appimage templates;
- Fix "DSO missing" linking problems;
- Add Podman Containerfile for building;
- Update BuildLinux.sh to work better in container build;
- fixes to create AppImage inside container;
- add env to build environment;
- Update build instructions in Containerfile;
Change-Id: I73e30ab488cda8c1b0886cd34858e125596f282b
(cherry picked from commit 83fc26670ca592c91c7af1d4033a04b587cfd4cd)
