Add csv to eol=crlf files

[JL2210]

https://www.ietf.org/rfc/rfc4180.txt

*.[cC][sS][vV]          text eol=crlf

[Nikolay-Sitnikov]

Encoding considerations:

As per section 4.1.1. of RFC 2046 [3], this media type uses CRLF
to denote line breaks. However, implementors should be aware that
some implementations may use other values.

[JL2210]

Encoding considerations:

As per section 4.1.1. of RFC 2046 [3], this media type uses CRLF
to denote line breaks. However, implementors should be aware that
some implementations may use other values.

It's been a long while since I made this issue but I think it was because the csv files in the repo already use crlf despite not being listed in .gitattributes, and that gave me some trouble checking out and committing on Windows where autocrlf is on by default

[glektarssza]

I'll add it to the list and run a git add --renormalize . to update any files already in the repo. Give me maybe 30 minutes.