Remove external test files, write them during test

SimoxUtility/tests/shapes/AABB_center_extents.json

SimoxUtility/tests/shapes/AABB_min_max.json

SimoxUtility/tests/shapes/CMakeLists.txt

SimoxUtility/tests/shapes/JsonConversionsTest.cpp

SimoxUtility/tests/shapes/JsonConversionsTest_files.h

...xUtility/tests/shapes/OrientedBox_pos_ori_dimensions.json

...ests/shapes/OrientedBox_position_orientation_extents.json