Added Pipe and Tab delimiter support

[plupBraves]

We have a vendor who wants pipe delimited files. I've also had vendors in the past who wanted tab delimited so went ahead and added that as well.

[Civile]

In case I just created a new NPM package to use the pipe delimiter: csv-writer-pipe-allowed

[brakmic]

Hi @plupBraves ,

I've forked the CSV Writer project to address some issues since the original seems abandoned. Your contribution for pipe and tab delimited files was super helpful, and I've included it in the fork.

You can check out the forked project here: CSV Writer Portable. I've credited you in the commit messages.

Thanks for your great work!

Best, Harris