move some geom unit tests from IPLT to OST

modules/geom/src/composite3.cc

modules/geom/src/composite3.hh

modules/geom/src/composite3_op.cc

modules/geom/src/composite3_op.hh

modules/geom/src/mat2.hh

modules/geom/src/mat3.hh

modules/geom/src/mat4.cc

modules/geom/src/vec2.hh

modules/geom/src/vec3.hh

modules/geom/src/vec4.hh

modules/geom/tests/CMakeLists.txt

modules/geom/tests/helper.hh

modules/geom/tests/test_composite2.cc

modules/geom/tests/test_composite3.cc

modules/geom/tests/test_mat2.cc

modules/geom/tests/test_mat3.cc

modules/geom/tests/test_mat4.cc

modules/geom/tests/test_op2.cc

modules/geom/tests/test_op3.cc

modules/geom/tests/test_op4.cc