combustionModels::EDC: New Eddy Dissipation Concept (EDC) turbulent combustion model

including support for TDAC and ISAT for efficient chemistry calculation.

Description
    Eddy Dissipation Concept (EDC) turbulent combustion model.

    This model considers that the reaction occurs in the regions of the flow
    where the dissipation of turbulence kinetic energy takes place (fine
    structures). The mass fraction of the fine structures and the mean residence
    time are provided by an energy cascade model.

    There are many versions and developments of the EDC model, 4 of which are
    currently supported in this implementation: v1981, v1996, v2005 and
    v2016.  The model variant is selected using the optional \c version entry in
    the \c EDCCoeffs dictionary, \eg

    \verbatim
        EDCCoeffs
        {
            version v2016;
        }
    \endverbatim

    The default version is \c v2015 if the \c version entry is not specified.

    Model versions and references:
    \verbatim
        V...