Add IMAP_INBOX_IDLE event

deltachat-ffi/deltachat.h

@@ -5705,6 +5705,14 @@ void dc_event_unref(dc_event_t* event);
  */
 #define DC_EVENT_IMAP_MESSAGE_MOVED   105
 
+/**
+ * Emitted before going into IDLE on the Inbox folder.
+ *
+ * @param data1 0
+ * @param data2 0
+ */
+#define DC_EVENT_IMAP_INBOX_IDLE 106
+
 /**
  * Emitted when a new blob file was successfully written
  *