App Polish (#1098)

* App polish

- Skeleton avatar colour on app switching.
- Bug report icon and string.
- Semi-bold font on room list timestamps.
- Room attachments button spacing and alignment.
- Replace link tint with semi-bold font in AnalyticsSettingsScreen.
- Semi-bold font on Invites button.
- Add padding to media attachment sheet.
- Message composer header layout tweaks.
- Remove indicator after changing homeserver with an MXID.
- Change copy permalink string.
- Formatting of link in Analytics Prompt.
- Remove indicator after changing homeserver with an MXID.
- Change copy permalink string.
- Formatting of link in Analytics Prompt.
- Only semi-bold the room timestamp when unread.
- Tweak the colour of the date separator.
- Add activity indicator to toast style user indicator.

ElementX/Sources/Screens/RoomScreen/View/TimelineItemMenu.swift

@@ -187,7 +187,7 @@ public struct TimelineItemMenu: View {
                 }
             case .copyPermalink:
                 Button { send(action) } label: {
-                    MenuLabel(title: L10n.commonPermalink, systemImageName: "link")
+                    MenuLabel(title: L10n.actionCopyLinkToMessage, systemImageName: "link")
                 }
             case .reply:
                 Button { send(action) } label: {