Record (some of) the VCF input information for output

[eriqande]

In the output pane there should be an option to return information about the actual SNPs that go into the haplotypes. Most notably it would be good to know their positions in the amplicons.

This is coming from some issues Phil Morin is having. He has some reads that have been heavily filtered which creates some Ns at the ends of some haplotypes. He would like to go back and modify the input VCF to remove those SNPs that have a lot of Ns. As it is now, it seems like one has to go back to the original input VCF and then reassociate the info there with the info coming out of microhaplot. It seems like we should be able to make a simple tibble that has that info in it so that we can just download it and get it from a CSV (or inspect it in the output pane).

Cool.

[ngthomas]

With the *_posinfo.rds and the output table - "SNP report", the user will be able to grab the SNP/"N" info.