Add support to TSV (Tab-separated values) files

[Lenninlasd]

It would be good add support to .tsv files, due to is a very clean format, and it avoid the problem we have when text data inside the file contains commas, for example:

To fix that, I use the method tsvParseRows from d3-dsv library that actually you use.

This is the result of the implementation, I stay tuned to send the PR.

[Lenninlasd]

Linked with:
#196
#201
#202

[leiii]

Hi @Lenninlasd I was wondering if this PR was merged? Really want this feature.

[Lenninlasd]

Hi @leiii, this is the issue where the kepler team plan to add this feature: #202,

I made a workaround in my project: piensa/mapas@af83726

[deantipin]

Hello, @Lenninlasd! I can't upload data without tsv separator, so I need your version. I am new to Kepler.gl and I don't know how to run it. Could you help me please? Thank you very much!

[macrigiuseppe]

bump this one