Restructuring of the vnf converter #233

Job	Run time
Build and test in Conda (ubuntu)	1m 22s
Build sdist and set version	16s
build-cpp-test-macos (debug)	1m 11s
build-cpp-test-linux (debug, gcc)	1m 49s
Build and test in Conda (windows)	5m 15s
build-cpp-test-macos (release)	1m 34s
build-cpp-test-windows (debug, msvc)	3m 57s
build-cpp-test-linux (debug, clang)	1m 31s
build-cpp-test-windows (debug, clang-cl)	4m 17s
build-cpp-test-linux (release, gcc)	2m 59s
build-cpp-test-windows (release, msvc)	3m 21s
build-cpp-test-linux (release, clang)	2m 42s
build-cpp-test-windows (release, clang-cl)	4m 37s
build-and-test-python (linux-x64)	3m 48s
build-and-test-python (linux-aarch64)	10m 10s
build-and-test-python (macos)	2m 51s
build-and-test-python (windows)	5m 10s
publish-wheels	10s
	57m 0s

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