Output regex matching table to user as part of logging

[roblanf]

I've noticed a lot of users so far (and I suspect a lot more that aren't posting here) are having trouble figuring out the regex pattern matching. It's not surprising, regex is HARD.

So here's my suggestion, once we've done the regex pattern matching, we should output as part of the logging (and as a file so users can check it and upload it when asking for help), a table that matches the format of our input csv file. Something like this:

"sangeranalyseR will group your X reads into Y contigs according to the following table, if this is not what you want, please check your input files and adjust accordingly, for help with this please see this page of the documentation: https://sangeranalyser.readthedocs.io/en/latest/content/beginner.html#step-1-preparing-your-input-files:

contig    direction    reads
A1    F    A1_F.ab1
A1    R    A1_R.ab1
etc