Render state items in the timeline and as the last message on the home screen. (#473)

* State events in the timeline WIP
* Implement membership change strings.
* Add other state event types and use in RoomSummaryProvider.

Co-authored-by: Stefan Ceriu <stefanc@matrix.org>

UnitTests/Sources/LoggingTests.swift

@@ -206,7 +206,7 @@ class LoggingTests: XCTestCase {
         XCTAssertFalse(content.contains(lastMessage))
     }
     
-    // swiftlint:disable function_body_length
+    // swiftlint:disable:next function_body_length
     func testTimelineContentIsRedacted() throws {
         // Given timeline items that contain text
         let textAttributedString = "TextAttributed"
@@ -275,8 +275,6 @@ class LoggingTests: XCTestCase {
         XCTAssertTrue(content.contains(fileMessage.id))
         XCTAssertFalse(content.contains(fileMessage.text))
     }
-
-    // swiftlint:enable function_body_length
     
     func testRustMessageContentIsRedacted() throws {
         // Given message content that contain text