Add CreateKernel and AbstractCreateKernel

CreateKernel is the base interface for creating kernels for convolution.
AbstractCreateKernel is the highest level base class.
Add AbstractCreateKernelNDD

Base class for creating kernels using the number of dimensions.  The
size of each dimension will be determined by the other parameters.
Add GaussianKernel interface

Interface for Gaussian kernels
Add LogKernel interface

Interface for Log (Laplacian of Gaussian) kernels
Add GaussianKernelNDD

Gaussian filter implementation ported from
org.knime.knip.core.algorithm.convolvers.filter.linear.Gaussian
Add LogKernelNDD

Laplacian of Gaussian implementation ported from
fiji.plugin.trackmate.detection.DetectionUtilities