move CalendarStore to separate file

crates/store/src/store.rs

@@ -0,0 +1,17 @@
+use anyhow::Result;
+use async_trait::async_trait;
+
+use crate::{calendar::Calendar, event::Event};
+
+#[async_trait]
+pub trait CalendarStore: Send + Sync + 'static {
+    async fn get_calendar(&self, id: &str) -> Result<Calendar>;
+    async fn get_calendars(&self, owner: &str) -> Result<Vec<Calendar>>;
+    async fn insert_calendar(&mut self, cid: String, calendar: Calendar) -> Result<()>;
+    async fn delete_calendar(&mut self, cid: &str) -> Result<()>;
+
+    async fn get_events(&self, cid: &str) -> Result<Vec<Event>>;
+    async fn get_event(&self, cid: &str, uid: &str) -> Result<Event>;
+    async fn upsert_event(&mut self, cid: String, uid: String, ics: String) -> Result<()>;
+    async fn delete_event(&mut self, cid: &str, uid: &str) -> Result<()>;
+}