ibdev2netdev-0.2.0

• Add SUSE LLC Copyrights
• options: add option to only display a specified netdev or rdma if
• src: move all C files to src directory
• add options
• cmake: set minimum version to 3.5
• drop travis and fix gitflow to use cmake
• cmake: mark project as C
• add spec file
• move to CMake
• LICENSE: Add missing copyright
• Create README.md
• github workflow: add missing checkout and dependencies
• Create c-cpp.yml
• travis: add a simple compilation test
• Makefile: make compilation much stricter
• hash: fix signed vs unsigned compareasons
• ibdev2netdev: fix missing prototype errors
• hash,nl: fix strict prototype errors
• nl: move nl_close to its proper file