[Python] Rename file into joint-derived.hpp to correspond to the type it exposes. i.e it does the exposition for each derived joint model ( that are in the joint model variant

Completed the visitors on JointVariants for each method of the JointBase interface  and moved it to a different file.

[C++][Python][Major] Replaced the way collisions and visuals are stored in GeometryModel. Now it is two lists of GeometryObject (one for collisions, one for visuals) aggregating information instead of multiple vectors. Now handle multiple collisions/visuals for one link when parsing urdf file and keep track of the mesh absolute path. Changed binding accordingly.

[C++][Python] Added algorithm working with joint configurations ( integrate, differentiate, interpolate, random, uniformlySample, distance), their python bindings and unittest

[C++][Python][Parser Geom] Parse automatically the ROS_PACKAGE_PATH environment variable if not clue is given by the user to where to search for meshes. Change the meshRootDir argument to a vector of strings (package directories). Updated Python consequently

[benchmark][cmake] Re added boost component. Needed by timings-geometry.cpp, and use correct name of algorithms

[C++][Frame] Moved the generation of random string in a new file. Modified the default constructor of frame to produce unique frame (as long as the random strings generated are unique)

Conflicts:

	CMakeLists.txt
	src/python/algorithms.hpp

[C++][Python][parser] Added operational_frames in Model as a vector of Frame {name, parent id, placementWrtParentJoint} and exposed it in python. When parsing a fixed joint, a frame is added to the model with the name of the fixed joint

By default, one can now build the benchmarks from make timings. They
are build along with the lib if BUILD_BENCHMARK is set to ON.

Conflicts:

	CMakeLists.txt
	src/python/algorithms.hpp

[C++][Python][parser] Added extra_frames in Model as a vector of Frame {name, parent id, placementWrtParentJoint} and exposed it in python. When parsing a fixed joint, a frame is added to the model with the name of the fixed joint

[bench][unittest] Reworked the comparison test between pinocchio and hpp : more tests for benchmarks along with functional tests ; removing magic paths to urdf models + modification of romeo urdf model. Also added a specific BUILD_TESTS_WITH_HPP cmake variable. If you want to run tests that execute hpp robot loading, be sure to have the package romeo_pinocchio installed (it is just a package done done by hand for the moment)

[C++] computeDistances and computeCollisions moved out of GeometryData. Added a vector of boolean handling the state of whether or not the pairs are in collision in GeometryData

[C++][CMake][Doc] Split geometry parser into two parts.Added guard to file to avoid multiple redefinition