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