Add bottom sheet modifier

RiotSwiftUI/Modules/Common/Modifiers/BottomSheet.swift

@@ -0,0 +1,32 @@
+// 
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+extension View {
+    func bottomSheet<V: View>(isPresented: Binding<Bool>, @ViewBuilder content: @escaping () -> V) -> some View {
+        Group {
+            if #available(iOS 16, *) {
+                sheet(isPresented: isPresented) {
+                    content()
+                        .presentationDetents([.medium])
+                }
+            } else {
+                sheet(isPresented: isPresented, content: content)
+            }
+        }
+    }
+}