feat: adds franka state bindings and and state observation #31

Job	Run time
check-paths	14s
pythonpackage	3m 36s
build_extensions (rcs_usb_cam)	2m 39s
build_extensions (rcs_realsense)	2m 28s
build_cpp_extensions (rcs_panda)	3m 40s
build_cpp_extensions (rcs_fr3)	3m 53s
build_extensions (rcs_xarm7)	2m 27s
build_cpp_extensions (rcs_robotics_library)	3m 51s
build_cpp_extensions (rcs_so101)	4m 53s
build_extensions (rcs_tacto)	2m 56s
	30m 37s

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