Add poll history service

RiotSwiftUI/Modules/Room/PollHistory/Service/MatrixSDK/PollHistoryService.swift

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+// 
+// Copyright 2023 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 MatrixSDK
+import Foundation
+
+final class PollHistoryService: PollHistoryServiceProtocol {
+    func fetchHistory() async throws -> [PollListData] {
+        []
+    }
+}

RiotSwiftUI/Modules/Room/PollHistory/Service/Mock/MockPollHistoryService.swift

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+// 
+// Copyright 2023 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.
+//
+
+final class MockPollHistoryService: PollHistoryServiceProtocol {
+    func fetchHistory() async throws -> [PollListData] {
+        (1..<10)
+            .map { index in
+                PollListData(startDate: .init().addingTimeInterval(-CGFloat(index) * 3600), question: "Do you like the poll number \(index)?")
+            }
+            .sorted { poll1, poll2 in
+                poll1.startDate > poll2.startDate
+            }
+    }
+}

RiotSwiftUI/Modules/Room/PollHistory/Service/PollHistoryServiceProtocol.swift

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+// 
+// Copyright 2023 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.
+//
+
+protocol PollHistoryServiceProtocol {
+    func fetchHistory() async throws -> [PollListData]
+}