add input description for cmake ci t8code linkage tests #27

Job	Run time
preparation (ON) / cmake_preparation	1m 1s
preparation (OFF) / cmake_preparation	1m 3s
t8code_tests (ON, Debug) / t8code_cmake_tests	15m 57s
t8code_tests (OFF, Release) / t8code_cmake_tests	3m 41s
t8code_tests (ON, Release) / t8code_cmake_tests	4m 3s
t8code_tests (OFF, Debug) / t8code_cmake_tests	15m 25s
t8code_linkage_tests (OFF, Debug) / t8code_cmake_tests	44m 22s
sc_p4est_tests (ON) / sc_p4est_cmake_tests	2m 59s
sc_p4est_tests (OFF) / sc_p4est_cmake_tests	3m 41s
t8code_linkage_tests (OFF, Release) / t8code_cmake_tests	10m 15s
t8code_linkage_tests (ON, Debug) / t8code_cmake_tests	47m 7s
t8code_linkage_tests (ON, Release) / t8code_cmake_tests	11m 14s
	2h 40m 48s

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