buildPMF - Create Fortran 1D interpolator

Given a text file consisting of an array of states over a 1D set of points, create a fortran function that interpolates the states by computing the average of each state between two locations. Typically, this is used to create a function for interpolating a 1D premixed flame solution from PREMIX or Cantera that can be linked with another code in 1-3 spatial dimensions for initializing data.

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Example: