feat(ffi): expose RoomInfo::fully_read_event_id

`m.fully_read` is now available on the FFI `RoomInfo` record

Signed-off-by: Daniel Anderson <daniel.anderson@toptal.com>

Author: danderson-cont

bindings/matrix-sdk-ffi/changelog.d/6569.added.md

@@ -0,0 +1 @@
+Add `RoomInfo::fully_read_event_id` to expose the user's `m.fully_read` event ID.

bindings/matrix-sdk-ffi/src/room/room_info.rs

@@ -107,6 +107,8 @@ pub struct RoomInfo {
     /// Events causing mentions/highlights for the user, according to their
     /// notification settings.
     num_unread_mentions: u64,
+    /// Event ID of the user's `m.fully_read` marker for this room, if any.
+    fully_read_event_id: Option<String>,
     /// The currently pinned event ids.
     pinned_event_ids: Vec<String>,
     /// The join rule for this room, if known.
@@ -206,6 +208,7 @@ impl RoomInfo {
             num_unread_messages: room.num_unread_messages(),
             num_unread_notifications: room.num_unread_notifications(),
             num_unread_mentions: room.num_unread_mentions(),
+            fully_read_event_id: room.fully_read_event_id().map(|id| id.to_string()),
             pinned_event_ids,
             join_rule,
             history_visibility: room.history_visibility_or_default().try_into()?,