Integrate franka_description as subdirectory

.gitmodules

CHANGELOG.md

franka_control/package.xml

franka_description

franka_description/CMakeLists.txt

franka_description/mainpage.dox

franka_description/meshes/hand.STL

franka_description/meshes/hand_collision.STL

franka_description/meshes/leftfinger.STL

franka_description/meshes/leftfinger_collision.STL

franka_description/meshes/link0.STL

franka_description/meshes/link0_collision.STL

franka_description/meshes/link1.STL

franka_description/meshes/link1_collision.STL

franka_description/meshes/link2.STL

franka_description/meshes/link2_collision.STL

franka_description/meshes/link3.STL

franka_description/meshes/link3_collision.STL

franka_description/meshes/link4.STL

franka_description/meshes/link4_collision.STL