Resolves#25057
This adds a E-Mail field to Organisations. The E-Mail is just shown on
the Profile when it is visited by a logged in User. The E-mail is not
used for something else.
**Screenshots:**


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Co-authored-by: Denys Konovalov <kontakt@denyskon.de>
Co-authored-by: Denys Konovalov <privat@denyskon.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>