Add SGal(3) #306

Job	Run time
build-mac (macos-11)	13m 17s
build-mac (macos-12)	5m 14s
build-ubuntu (ubuntu-20.04, Release, gcc, g++)	5m 12s
build-ubuntu (ubuntu-20.04, Release, clang, clang++)	4m 36s
build-ubuntu (ubuntu-20.04, Debug, gcc, g++)	5m 46s
build-win (windows-2019, Visual Studio 16 2019)	8m 32s
build-ubuntu (ubuntu-20.04, Debug, clang, clang++)	3m 11s
build-win (windows-2022, Visual Studio 17 2022)	8m 24s
build-ubuntu (ubuntu-22.04, Release, gcc, g++)	6m 44s
build-ubuntu (ubuntu-22.04, Release, clang, clang++)	5m 6s
build-ubuntu (ubuntu-22.04, Debug, gcc, g++)	6m 22s
build-ubuntu (ubuntu-22.04, Debug, clang, clang++)	3m 59s
cppcheck	6m 37s
autodiff	6m 5s
codecov	6m 30s
ceres	7m 0s
valgrind	13m 2s
pybind11-cmake (ubuntu-20.04)	5m 25s
pybind11-pip (macos-latest, 3.7)	2m 27s
pybind11-cmake (ubuntu-latest)	5m 41s
pybind11-pip (macos-latest, 3.8)	1m 31s
pybind11-pip (macos-latest, 3.9)	1m 47s
pybind11-pip (macos-latest, 3.10)	1m 43s
pybind11-pip (ubuntu-latest, 3.7)	1m 22s
pybind11-pip (ubuntu-latest, 3.8)	1m 13s
pybind11-pip (ubuntu-latest, 3.9)	1m 23s
pybind11-pip (ubuntu-latest, 3.10)	1m 8s
	2h 19m 17s

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