ENH: Added new ceeateZeroDirectory utility

Uses a system/caseProperties file to select templates from
etc/caseDicts/createZeroDirectoryTemplates to enable high-level setup
of a case.
See
- etc/caseDicts/createZeroDirectoryTemplates
- tutorials/preProcessing/createZeroDirectory

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/leftSolid/radiationProperties

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      radiationProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+radiationModel  opaqueSolid;
+
+absorptionEmissionModel constantAbsorptionEmission;
+
+constantAbsorptionEmissionCoeffs
+{
+    absorptivity    absorptivity [ 0 -1 0 0 0 0 0 ] 0.0;  //opaque
+    emissivity      emissivity [ 0 -1 0 0 0 0 0 ] 0.1;
+    E               E [ 1 -1 -3 0 0 0 0 ] 0;
+}
+
+scatterModel    none;
+
+transmissivityModel none;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/leftSolid/thermophysicalProperties

@@ -0,0 +1 @@
+../heater/thermophysicalProperties