Tweaks while running performance tests

[jsignell]

The big changes are:

• Only save allpixels and allfires_gdf at the end of Fire_Forward rather than on every t
• Add optional client kwarg to save_large_fire_layers and save_snapshots to enable easy parallelization of those steps via dask
• Preprocess daily input files when monthly aren't available -- even if the daily files are not freshly updated from upstream
• Use either version of SNPP monthly files (C2.01 or C1.05)
• Make log location and number of dask workers configurable from settings