Add trash bin feature

crates/store/migrations/20240621161002_init.sql

@@ -0,0 +1,20 @@
+CREATE TABLE calendars (
+  id TEXT PRIMARY KEY NOT NULL,
+  owner TEXT NOT NULL,
+  name TEXT,
+  description TEXT,
+  'order' INT DEFAULT 0 NOT NULL,
+  color TEXT,
+  timezone TEXT NOT NULL,
+  deleted_at DATETIME
+);
+
+CREATE TABLE events (
+  uid TEXT NOT NULL,
+  cid TEXT NOT NULL,
+  ics TEXT NOT NULL,
+  deleted_at DATETIME,
+  PRIMARY KEY (cid, uid),
+  FOREIGN KEY (cid) REFERENCES calendars(id)
+);
+