create room : branch the join rule override

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/createroom/CreateRoomParameters.kt

@@ -18,4 +18,5 @@ data class CreateRoomParameters(
     val preset: RoomPreset,
     val invite: List<UserId>? = null,
     val avatar: String? = null,
+    val joinRuleOverride: JoinRuleOverride = JoinRuleOverride.None,
 )

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/createroom/JoinRuleOverride.kt

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Please see LICENSE in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.api.createroom
+
+/**
+ * Rules to override the default room join rules.
+ */
+sealed interface JoinRuleOverride {
+    data object Knock : JoinRuleOverride
+    data object None : JoinRuleOverride
+}