Automated "test_all" target and Code Coverage #1677

Job	Run time
test_bmi_fortran (ubuntu-latest)	2m 53s
test_bmi_multi (ubuntu-latest)	3m 52s
test_bmi_c (ubuntu-latest)	3m 20s
test_bmi_fortran (macos-latest)	3m 56s
test_bmi_multi (macos-latest)	5m 10s
test_bmi_c (macos-latest)	6m 4s
test_bmi_python (ubuntu-latest)	3m 39s
test_mpi_remote_nexus (ubuntu-latest)	1m 57s
test_bmi_python (macos-latest)	4m 31s
test_pet (ubuntu-latest)	2m 32s
test_pet (macos-latest)	5m 5s
test_unit (ubuntu-latest)	4m 53s
test_unit (macos-latest)	5m 14s
test_bmi_cpp (ubuntu-latest)	3m 5s
test_bmi_cpp (macos-latest)	5m 1s
	1h 1m 12s

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