* files for adding known external force to dynamic model.

* add external force to dynamic model in computeData

* external forces added in dynamic model and local/world-oriented frame done

* properly add measured force in formulation

* add 3Dforce

* add removeMeasuredForce in inv-dyn-formulation

* const parameter in setForce

* add python pindings (reference on contacts ones)

* point correctly to submodule

* name change

* remove unfinished bindings and rename 1 header

* Removed 'for' loop for h_fext in decodeSolution

* format with clang 10

* try to check cmake-format

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Co-authored-by: Pauline Maurice <pauline.maurice@loria.fr>
Co-authored-by: Nicolas Valle <nicolas.valle@loria.fr>
Co-authored-by: pmaurice <pauline.maurice@inria.fr>