Updated C5 MOD35 Processing Path code and C5MOD35_Evaluation in preparation for publication

Submitted MOD35-landcover bias paper with code from this commit. Also added short script to test swtif program.

Finished function to make raster extent for any modis tile

Update MOD35 process path extraction to use sensor angle

Added script to test functionality of HEG tool which reveals that v2.12 segfaults when multiple bands are selected for processing. Also updated MOD35_ExtractProcessPath to process one-band-at-a-time instead of in batches.

Added script to make GHCN station shapefile for global station gap analysis

Updated script to process MOD35 Processing Path using HEG to interpolate sensor zenith observations. Also working on figures for MOD35 C5 vs C6 comparison in MOD35C5_Evaluation script

Added script to extract MOD35 processing path from swath level data and another to summarize MOD35 data. Also updated NDP-026D script to use new MOD35/09 summaries from Earth Engine