Further design updates to the timeline. (#524)

- Decryption banner on the timeline
- Bubble colours
- Background insets
- Multiline composer corner radius
- Read marker
- GIF indicator
- Reactions shape
- Use RoomTimelineViewLabelStyle everywhere possible
- Only set a line limit on reply quotes, allow all the lines for regular quotes.
- Message label icons
- Yes/No button casing
- Make sender profiles immutable.
- Enable copy link and invite buttons.
- Fix layout loop detecting multiline composer text.
- Add animation to the encryption banner.

ElementX/Sources/Screens/SessionVerification/View/SessionVerificationScreen.swift

@@ -33,7 +33,7 @@ struct SessionVerificationScreen: View {
                 .navigationBarTitleDisplayMode(.inline)
                 .toolbar { toolbarContent }
             }
-            .background(Color.element.background)
+            .background(Color.element.background.ignoresSafeArea())
             .safeAreaInset(edge: .bottom) { actionButtons.padding() }
         }
         .navigationViewStyle(.stack)