Move ical-related stuff to rustical_ical crate

crates/store/src/calendar.rs

@@ -0,0 +1,27 @@
+use crate::synctoken::format_synctoken;
+use chrono::NaiveDateTime;
+use rustical_ical::CalendarObjectType;
+use serde::Serialize;
+
+#[derive(Debug, Default, Clone, Serialize)]
+pub struct Calendar {
+    pub principal: String,
+    pub id: String,
+    pub displayname: Option<String>,
+    pub order: i64,
+    pub description: Option<String>,
+    pub color: Option<String>,
+    pub timezone: Option<String>,
+    pub timezone_id: Option<String>,
+    pub deleted_at: Option<NaiveDateTime>,
+    pub synctoken: i64,
+    pub subscription_url: Option<String>,
+    pub push_topic: String,
+    pub components: Vec<CalendarObjectType>,
+}
+
+impl Calendar {
+    pub fn format_synctoken(&self) -> String {
+        format_synctoken(self.synctoken)
+    }
+}