Add simple example with profile header, avatar and name.

RiotSwiftUI/Modules/Template/SimpleProfileExample/Mock/TemplateMockUserService.swift

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+// 
+// Copyright 2021 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 Foundation
+
+struct TemplateMockUserService: TemplateUserServiceType {
+    
+    static let example = TemplateMockUserService(userId: "123", displayName: "Alice", avatarUrl: "mx123@matrix.com", currentlyActive: true, lastActive: 123456)
+    
+    let userId: String
+    let displayName: String?
+    let avatarUrl: String?
+    let currentlyActive: Bool
+    let lastActive: UInt
+}

RiotSwiftUI/Modules/Template/SimpleProfileExample/Model/TemplateUserProfileViewState.swift

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+// 
+// Copyright 2021 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 Foundation
+
+struct TemplateUserProfileViewState {
+    let avatar: AvatarInputType?
+    let displayName: String?
+}

RiotSwiftUI/Modules/Template/SimpleProfileExample/View/TemplateUserProfile.swift

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+// 
+// Copyright 2021 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
+
+@available(iOS 14.0, *)
+struct TemplateUserProfile: View {
+    
+    @ObservedObject var viewModel: TemplateUserProfileViewModel
+    
+    var header: some View {
+        VStack {
+            if let avatar = viewModel.viewState.avatar {
+                HStack{
+                    Spacer()
+                    AvatarImage(avatarData: avatar, size: .xxLarge)
+                    Spacer()
+                }
+            }
+            Text(viewModel.viewState.displayName ?? "")
+        }
+
+    }
+    var body: some View {
+        VectorForm {
+            header
+        }
+    }
+}
+
+@available(iOS 14.0, *)
+struct TemplateUserProfile_Previews: PreviewProvider {
+    static var previews: some View {
+        TemplateUserProfile(viewModel: TemplateUserProfileViewModel(userService: TemplateMockUserService.example))
+            .addDependency(MockAvatarService.example)
+    }
+}

RiotSwiftUI/Modules/Template/SimpleProfileExample/ViewModel/TemplateUserProfileViewModel.swift

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+// 
+// Copyright 2021 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
+
+@available(iOS 14.0, *)
+class TemplateUserProfileViewModel: ObservableObject {
+    
+    private let userService: TemplateUserServiceType
+    
+    @Published var viewState: TemplateUserProfileViewState
+    
+    private static func defaultState(userService: TemplateUserServiceType) -> TemplateUserProfileViewState {
+        return TemplateUserProfileViewState(avatar: userService.avatarData, displayName: userService.displayName)
+    }
+    
+    init(userService: TemplateUserServiceType, initialState: TemplateUserProfileViewState? = nil) {
+        self.userService = userService
+        self.viewState = initialState ?? Self.defaultState(userService: userService)
+    }
+}

RiotSwiftUI/Modules/Template/SimpleProfileExample/ViewModel/TemplateUserServiceType.swift

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+// 
+// Copyright 2021 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 Foundation
+
+protocol TemplateUserServiceType: Avatarable {
+    var userId: String { get }
+    var displayName: String? { get }
+    var avatarUrl: String? { get }
+    var currentlyActive: Bool { get }
+    var lastActive: UInt { get }
+}
+
+extension TemplateUserServiceType {
+    var mxContentUri: String? {
+        avatarUrl
+    }
+    var matrixItemId: String {
+        userId
+    }
+}