ENH: interpolationWeights: run-time selectable interpolation

src/OpenFOAM/Make/files

...ields/GeometricFields/GeometricField/uniformInterpolate.C

...ields/GeometricFields/GeometricField/uniformInterpolate.H

...lationWeights/interpolationWeights/interpolationWeights.C

...lationWeights/interpolationWeights/interpolationWeights.H

...ghts/interpolationWeights/interpolationWeightsTemplates.C

...s/linearInterpolationWeights/linearInterpolationWeights.C

...s/linearInterpolationWeights/linearInterpolationWeights.H

...s/splineInterpolationWeights/splineInterpolationWeights.C

...s/splineInterpolationWeights/splineInterpolationWeights.H

...OpenFOAM/primitives/functions/DataEntry/Table/TableBase.C

...OpenFOAM/primitives/functions/DataEntry/Table/TableBase.H