added texcoord generation to hsc/tube

modules/gfx/src/CMakeLists.txt

modules/gfx/src/impl/cartoon_renderer.cc

modules/gfx/src/impl/entity_detail.cc

modules/gfx/src/impl/entity_detail.hh

modules/gfx/src/scene.cc

modules/gfx/src/shader.cc

modules/gfx/src/shader/test_tex_fs.glsl

modules/gfx/src/vertex_array.cc

modules/gfx/src/vertex_array.hh