createTaxonTable - wide vs. narrow form

[cmirzayi]

Right now, createTaxonTable() outputs a very wide tibble with the entire taxonomy of the taxon presented as columns 7-13. This has some issues:

• It does not support domain which was added to the taxonomy so all the taxonomy is currently wrong
• It includes a column called "n_signatures" which I'm not sure what this means
• It also includes the metaphan name which feels unnecessary

Changes to this function should include:

• Remove n_signatures if it's not displaying anything useful
• Add an argument like "format = 'Full'/'Simple' " where full displays the full taxonomy columns and metaphlan name while simple only displays columns 1-6 and "Simple" is the default for that argument