Home screen - User options menu (#185)

* Add user options menu properties to home screen

* Implement home screen new callbacks

* Add user menu button on home screen

* Add changelog

* Fix unit tests

* Fix user menu button layout, make menu sectioned

* Remove user display name from home screen classes

ElementX/Sources/Other/Extensions/Image.swift

@@ -0,0 +1,22 @@
+//
+// 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 Image {
+    /// Empty image view
+    static let empty = Image(uiImage: .init(ciImage: .empty()))
+}