Add new plugin to handle csv files

[ssonal]

Adds support for csv parsing.

Related to #1199

[KyleAMathews]

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[KyleAMathews]

Looks great!

Could you also add a really simple example site? One JS component page that queries data from a sample csv file. Perhaps could just output it into a table or something?

[ssonal]

Sure thing!

[ssonal]

Very basic example but I hope it explains enough.

[KyleAMathews]

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[KyleAMathews]

Sorry for the slow merge, been traveling but this is really really awesome! Thanks for such a nice PR!

[jlengstorf]

Hiya @ssonal! 👋

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