Add SwiftFormat to the project. (#129)

* Run swiftformat for whitespace.
* Run swiftformat with some rules.

ElementX/Sources/Services/Timeline/MockRoomTimelineController.swift

@@ -6,8 +6,8 @@
 //  Copyright © 2022 Element. All rights reserved.
 //
 
-import Foundation
 import Combine
+import Foundation
 
 class MockRoomTimelineController: RoomTimelineControllerProtocol {
     
@@ -40,18 +40,12 @@ class MockRoomTimelineController: RoomTimelineControllerProtocol {
                                                                           senderDisplayName: "Bob")]
     
     func paginateBackwards(_ count: UInt) async -> Result<Void, RoomTimelineControllerError> {
-        return .failure(.generic)
+        .failure(.generic)
     }
     
-    func processItemAppearance(_ itemId: String) async {
-        
-    }
+    func processItemAppearance(_ itemId: String) async { }
     
-    func processItemDisappearance(_ itemId: String) async {
-        
-    }
+    func processItemDisappearance(_ itemId: String) async { }
     
-    func sendMessage(_ message: String) async {
-        
-    }
+    func sendMessage(_ message: String) async { }
 }

ElementX/Sources/Services/Timeline/RoomTimelineController.swift

@@ -6,8 +6,8 @@
 //  Copyright © 2022 Element. All rights reserved.
 //
 
-import Foundation
 import Combine
+import Foundation
 import UIKit
 
 class RoomTimelineController: RoomTimelineControllerProtocol {
@@ -79,9 +79,7 @@ class RoomTimelineController: RoomTimelineControllerProtocol {
         }
     }
     
-    func processItemDisappearance(_ itemId: String) {
-        
-    }
+    func processItemDisappearance(_ itemId: String) { }
     
     func sendMessage(_ message: String) async {
         switch await timelineProvider.sendMessage(message) {

ElementX/Sources/Services/Timeline/RoomTimelineControllerProtocol.swift

@@ -6,8 +6,8 @@
 //  Copyright © 2022 Element. All rights reserved.
 //
 
-import Foundation
 import Combine
+import Foundation
 
 enum RoomTimelineControllerCallback {
     case updatedTimelineItems

ElementX/Sources/Services/Timeline/RoomTimelineProvider.swift

@@ -6,8 +6,8 @@
 //  Copyright © 2022 Element. All rights reserved.
 //
 
-import Foundation
 import Combine
+import Foundation
 
 class RoomTimelineProvider: RoomTimelineProviderProtocol {
     private let roomProxy: RoomProxyProtocol
@@ -21,13 +21,13 @@ class RoomTimelineProvider: RoomTimelineProviderProtocol {
         self.roomProxy.callbacks
             .receive(on: DispatchQueue.main)
             .sink { [weak self] callback in
-            guard let self = self else { return }
+                guard let self = self else { return }
             
-            switch callback {
-            case .updatedMessages:
-                self.callbacks.send(.updatedMessages)
-            }
-        }.store(in: &cancellables)
+                switch callback {
+                case .updatedMessages:
+                    self.callbacks.send(.updatedMessages)
+                }
+            }.store(in: &cancellables)
     }
     
     var messages: [RoomMessageProtocol] {

ElementX/Sources/Services/Timeline/RoomTimelineProviderProtocol.swift

@@ -6,8 +6,8 @@
 //  Copyright © 2022 Element. All rights reserved.
 //
 
-import Foundation
 import Combine
+import Foundation
 
 enum RoomTimelineProviderCallback {
     case updatedMessages
@@ -26,5 +26,5 @@ protocol RoomTimelineProviderProtocol {
     
     func paginateBackwards(_ count: UInt) async -> Result<Void, RoomTimelineProviderError>
     
-    func sendMessage(_ message: String) async ->  Result<Void, RoomTimelineProviderError>
+    func sendMessage(_ message: String) async -> Result<Void, RoomTimelineProviderError>
 }

ElementX/Sources/Services/Timeline/TimelineItems/DecorationTimelineItemProtocol.swift

@@ -8,6 +8,4 @@
 
 import Foundation
 
-protocol DecorationTimelineItemProtocol: RoomTimelineItemProtocol {
-
-}
+protocol DecorationTimelineItemProtocol: RoomTimelineItemProtocol { }

ElementX/Sources/Services/Timeline/TimelineItems/RoomTimelineItemFactory.swift

@@ -42,6 +42,7 @@ struct RoomTimelineItemFactory: RoomTimelineItemFactoryProtocol {
     }
     
     // MARK: - Private
+
     private func buildTextTimelineItemFromMessage(_ message: TextRoomMessage,
                                                   _ isOutgoing: Bool,
                                                   _ showSenderDetails: Bool,