Add CalDAV support

Summary:
Notes:

- Add a `webdavcommon` folder for WebDAV generic resource code
- Move `davresource` to `carddaveresource` and make it use the WebDAV code
- For now it tests the CalDAV resource directly on KolabNow (to be changed)
- Only synchronization, not adding / changing / removing WebDAV collections or items (to be implemented)
- Only events are currently supported (todo, freebusy, etc. are to be implemented but should be straightforward)

Fixes T8224

Reviewers: cmollekopf

Tags: #sink

Maniphest Tasks: T8224

Differential Revision: https://phabricator.kde.org/D11741

1 files changed, 8 insertions, 0 deletions

diff --git a/common/domain/calendar.fbs b/common/domain/calendar.fbs
new file mode 100644
index 0000000..9788539
--- /dev/null
+++ b/common/domain/calendar.fbs
@@ -0,0 +1,8 @@
+namespace Sink.ApplicationDomain.Buffer;
+
+table Calendar {
+  name:string;
+}
+
+root_type Calendar;
+file_identifier "AKFB";