Import upstream v0.16.22, stripped

Upstream commit: 474dd0229cb20cf513036619781ed97bd8073c3f
Enterprise-only files removed or emptied: 63
Enterprise-only snippets removed: 117 in 50 files
Dangling module declarations removed: 5
Cargo edits turning enterprise off: 14
Verification: clean
Enterprise feature gates left for rebuilt features: 19 in 18 files

Produced by tools/fork/strip.py. The full report is in docs/fork/strip-reports/ on main.

crates/groupware/src/scheduling/event_create.rs

@@ -0,0 +1,27 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <[email protected]>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
+use crate::scheduling::{
+    ItipError, ItipMessage, itip::itip_finalize, organizer::organizer_request_full,
+    snapshot::itip_snapshot,
+};
+use calcard::icalendar::ICalendar;
+
+pub fn itip_create(
+    ical: &mut ICalendar,
+    account_emails: &[String],
+) -> Result<Vec<ItipMessage<ICalendar>>, ItipError> {
+    let itip = itip_snapshot(ical, account_emails, false)?;
+    if !itip.organizer.is_server_scheduling {
+        Err(ItipError::OtherSchedulingAgent)
+    } else if !itip.organizer.email.is_local {
+        Err(ItipError::NotOrganizer)
+    } else {
+        organizer_request_full(ical, &itip, None, true).inspect(|_| {
+            itip_finalize(ical, &[]);
+        })
+    }
+}