move ContainmentMode to h3api.h #1606

Job	Run time
Test Compile clang Debug	4m 2s
CMake correctness checks	5s
Test Compile clang Release	2m 32s
Coverage	3m 38s
Test Compile clang Debug -fsanitize=undefined,float-divide-by-zero -fno-sanitize-recover=undefined,float-divide-by-zero	6m 19s
Test Compile clang Release -fsanitize=undefined,float-divide-by-zero -fno-sanitize-recover=undefined,float-divide-by-zero	3m 14s
Test Compile gcc Debug	3m 28s
Test Compile clang Debug -fsanitize=memory -fno-sanitize-recover=memory	29m 27s
Test Compile gcc Release	2m 26s
Test Valgrind	14m 5s
Test Compile clang Release -fsanitize=memory -fno-sanitize-recover=memory	6m 47s
Test Compile clang Debug -fsanitize=address -fno-sanitize-recover=address	5m 34s
Test Compile clang Release -fsanitize=address -fno-sanitize-recover=address	3m 16s
	1h 24m 53s

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