ffi: Put CreateRoomParameters back into the UDL file

… to restore the default values of some fields.

bindings/matrix-sdk-ffi/src/api.udl

@@ -149,6 +149,17 @@ interface SlidingSyncBuilder {
     SlidingSync build();
 };
 
+dictionary CreateRoomParameters {
+    string name;
+    string? topic = null;
+    boolean is_encrypted;
+    boolean is_direct = false;
+    RoomVisibility visibility;
+    RoomPreset preset;
+    sequence<string>? invite = null;
+    string? avatar = null;
+};
+
 enum RoomVisibility {
     /// Indicates that the room will be shown in the published room list.
     "Public",

bindings/matrix-sdk-ffi/src/client.rs

@@ -522,7 +522,6 @@ impl Client {
     }
 }
 
-#[derive(uniffi::Record)]
 pub struct CreateRoomParameters {
     pub name: String,
     pub topic: Option<String>,