Fix missing \r\n in data/whirlwind.warc{.wet|.wat}

[lfoppiano]

This PR fixes #13:

• fix .editorconfig
• add .gitattributes
• replace data/whirlwind.warc.wat, data/whirlwind.warc.wetanddata/whirlwind.warc` with the ones from the python tour

(base) ➜  jwarc git:(feature/filter-type) java -jar target/jwarc-0.34.1-SNAPSHOT.jar validate --verbose /Users/lfoppiano/development/projects/cc/whirlwind-java/data/whirlwind.warc
Validating /Users/lfoppiano/development/projects/cc/whirlwind-java/data/whirlwind.warc
whirlwind.warc:   offset 0 (length 749) warcinfo application/warc-fields
whirlwind.warc:   offset 749 (length 626) request application/http;msgtype=request
    https://an.wikipedia.org/wiki/Escopete
    HTTP/1.1 GET
    date: 2024-05-18T01:58:10Z
    payload media type: application/octet-stream
whirlwind.warc:   offset 1375 (length 75174) response application/http;msgtype=response
    https://an.wikipedia.org/wiki/Escopete
    HTTP/1.1 200 OK
    date: 2024-05-18T01:58:10Z
    payload media type: text/html
    payload digest pass
    block digest pass
whirlwind.warc:   offset 76549 (length 589) metadata application/warc-fields
    https://an.wikipedia.org/wiki/Escopete
    date: 2024-05-18T01:58:10Z
(base) ➜  jwarc git:(feature/filter-type) java -jar target/jwarc-0.34.1-SNAPSHOT.jar validate --verbose /Users/lfoppiano/development/projects/cc/whirlwind-java/data/whirlwind.warc.wet
Validating /Users/lfoppiano/development/projects/cc/whirlwind-java/data/whirlwind.warc.wet
whirlwind.warc.wet:   offset 0 (length 635) warcinfo application/warc-fields
whirlwind.warc.wet:   offset 635 (length 4860) conversion text/plain
    block digest pass
(base) ➜  jwarc git:(feature/filter-type) java -jar target/jwarc-0.34.1-SNAPSHOT.jar validate --verbose /Users/lfoppiano/development/projects/cc/whirlwind-java/data/whirlwind.warc.wat
Validating /Users/lfoppiano/development/projects/cc/whirlwind-java/data/whirlwind.warc.wat
whirlwind.warc.wat:   offset 0 (length 545) warcinfo application/warc-fields
whirlwind.warc.wat:   offset 545 (length 1697) metadata application/json
    https://an.wikipedia.org/wiki/Escopete
    date: 2024-05-31T01:17:49Z