Parameters entries and expected formatting

Describe the formats in TParameterDefinitions and TParamEntry.

All those defined by standard sscanf, plus these extensions:

MVSim extensions to sscanf formats

Format specifier	C++ pointer to…	Expected format
%lf_deg	double	A number, in degrees.
%s	std::string	A string. Whitespace will be trimmed.
%color	mrpt::img::TColor	A color like #RRGGBB[AA] ([00-FF] each)
%pose2d	mrpt::poses::CPose2D	Expects X Y YAW_DEG
%pose2d_ptr3d	mrpt::poses::CPose3D	Expects X Y YAW_DEG
%pose3d	mrpt::poses::CPose3D	Expects X Y Z YAW_DEG PITCH_DEG ROLL_DEG
%point3d	mrpt::math::TPoint3D	Expects X Y Z YAW_DEG PITCH_DEG ROLL_DEG
%bool	bool	Expects X Y [Z] (default Z=0)