gistfile1.txt

Task: add vector type option parsing to chia_plot for the -t and -2 options
so the user can specify a comma-separated list of paths instead of just a single path

e.g.

./chia-plot -n 4 -t /mnt/ssd1/,/mnt/ssd2 -2 /mnt/ssd3/,/mnt/ssd4/,/mnt/ssd5 <other options>

in the above example the actual paths used will be as follows:

plot    -t_path        -2_path
1	/mnt/ssd1	/mnt/ssd3
2	/mnt/ssd2	/mnt/ssd4
3	/mnt/ssd1	/mnt/ssd5
4	/mnt/ssd2	/mnt/ssd3

and so on

Requirements:
* the new solution must be backwards compatible (previous valid string arguments must work as before)
* the new solution must include descriptive/helpful instructions in the README file
* in cases where -d (finaldir) isn't specified, the completed file must be left on the tmpdir on which it was created


Suggestions:
* Study the option parsing library and play with option parsing by creating a hello-world.cpp file and using the library to get familiar with how it works
https://github.com/jarro2783/cxxopts

* use the 'i' counter in the num_plots for-loop to index into your list of directories to achieve the circular buffer behavior described above
e.g.  tmp_dir = tmp_dir_vec[i%tmp_dir_vec.size()];