reactingParcelFoam, coalChemistryFoam: Added LTS support

Replaces LTSReactingParcelFoam and LTSCoalChemistryFoam

    Select LTS via the ddtScheme:

        ddtSchemes
        {
            default         localEuler rDeltaT;
        }

tutorials/lagrangian/LTSReactingParcelFoam/counterFlowFlame2D/system/controlDict → tutorials/lagrangian/reactingParcelFoam/counterFlowFlame2DLTS/system/controlDict

@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     LTSReactingParcelFoam;
+application     reactingParcelFoam;
 
 startFrom       startTime;