Unify CRLF for repo

[th-joerger]

Summary

Change all line endings to lf upstream. This is the requirement stated in the .editorconfig file anyways.

Motivation

My work for #5127 was made difficult by diverging CRLF settings of files in the repo. I would suggest to fix the upstream linebreak settings of all files and use git config core.autcrlf true locally.

Additional context

Output of git ls-files --eol | grep -v -E '^(i\/lf|i\/none|i\/-text)'

i/      w/      attr/                   .env
i/crlf  w/crlf  attr/                   data/Dockerfiles/dovecot/supervisord.conf
i/crlf  w/crlf  attr/                   data/Dockerfiles/netfilter/server.py
i/crlf  w/crlf  attr/                   data/conf/dovecot/dovecot.folders.conf
i/crlf  w/crlf  attr/                   data/conf/rspamd/dynmaps/aliasexp.php
i/crlf  w/crlf  attr/                   data/conf/rspamd/dynmaps/bcc.php
i/crlf  w/crlf  attr/                   data/conf/rspamd/dynmaps/settings.php
i/crlf  w/crlf  attr/                   data/conf/rspamd/meta_exporter/pipe.php
i/crlf  w/crlf  attr/                   data/conf/rspamd/meta_exporter/pipe_rl.php
i/crlf  w/crlf  attr/                   data/conf/rspamd/meta_exporter/pushover.php
i/crlf  w/crlf  attr/                   data/conf/sogo/plist_ldap
i/mixed w/mixed attr/                   data/web/css/build/003-bootstrap-select.css
i/crlf  w/crlf  attr/                   data/web/css/build/014-mailcow.css
i/crlf  w/crlf  attr/                   data/web/css/site/admin.css
i/crlf  w/crlf  attr/                   data/web/css/site/debug.css
i/crlf  w/crlf  attr/                   data/web/css/site/edit.css
i/crlf  w/crlf  attr/                   data/web/css/site/index.css
i/crlf  w/crlf  attr/                   data/web/css/site/mailbox.css
i/crlf  w/crlf  attr/                   data/web/css/site/user.css
i/crlf  w/crlf  attr/                   data/web/inc/ajax/container_ctrl.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/destroy_tfa_auth.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/qitem_details.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/qr_gen.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/show_rspamd_global_filters.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/sieve_validation.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/syncjob_logs.php
i/crlf  w/crlf  attr/                   data/web/inc/ajax/transport_check.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.acl.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.address_rewriting.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.admin.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.app_passwd.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.customize.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.dkim.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.docker.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.fail2ban.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.fwdhost.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.mailbox.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.mailq.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.oauth2.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.policy.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.pushover.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.quarantine.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.quota_notification.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.ratelimit.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.rspamd.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.tls_policy_maps.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/functions.transports.inc.php
i/crlf  w/crlf  attr/                   data/web/inc/lib/WebAuthn/rootCertificates/huawei.pem
i/crlf  w/crlf  attr/                   data/web/inc/lib/vendor/soundasleep/html2text/tests/anchors.html
i/crlf  w/crlf  attr/                   data/web/inc/lib/vendor/soundasleep/html2text/tests/basic.html
i/crlf  w/crlf  attr/                   data/web/inc/lib/vendor/soundasleep/html2text/tests/table.html
i/crlf  w/crlf  attr/                   data/web/inc/lib/vendor/soundasleep/html2text/tests/test3.txt
i/crlf  w/crlf  attr/                   data/web/inc/lib/vendor/soundasleep/html2text/tests/test4.txt
i/      w/      attr/                   data/web/inc/lib/vendor/yubico/u2flib-server/README.adoc
i/crlf  w/crlf  attr/                   data/web/js/build/006-formcache.min.js
i/crlf  w/crlf  attr/                   data/web/js/build/009-numberedtextarea.min.js
i/crlf  w/crlf  attr/                   data/web/js/build/011-api.js
i/mixed w/mixed attr/                   data/web/json_api.php
i/crlf  w/crlf  attr/                   data/web/oauth/profile.php
i/crlf  w/crlf  attr/                   data/web/oauth/token.php

[MAGICCC]

Also somewhat related to #3129

[th-joerger]

Yes. It is also a very quick fix.

[MAGICCC]

Indeed, but question is if crlf or lf, this was a discussion in one of the PRs linked in my issue

[th-joerger]

As most of the code is most of the times run on Linux (which uses LF), most of the repo is already LF, and LF being the de-facto standard in most larger git repos, I think the only sensible choice is LF.

When checking out on windows, core.autocrlf true is handling all problems completely frictionless. Having some files in CRLF, and some even with MIXED line endings is literally the worst state a code base can be in.