Adopt Compound Colours (#1086)

* Delete deprecated font tokens.

* Migrate from primaryContent to textPrimary/iconPrimary.

* Migrate from links to textLinkExternal.

* Migrate from secondaryContent to textSecondary/iconSecondary.

* Migrate from accent to textActionPrimary.

- Some uses changed to textPrimary or iconPrimary as necessary.
- Some manual tints removed now that that Sentry is fixed.

* Migrate alert to textCriticalPrimary/iconCriticalPrimary.

* Migrate from brand to textActionAccent/iconAccentTertiary.

* Migrate from background to bgCanvasDefault or text/iconOnSolidPrimary

* Migrate system to bgSubtleSecondary.

* Remove ElementUIColors and obsolete migrated colours.

* Migrate tertiaryContent/quaternaryContent/quinaryContent to Compound.

* Migrate bubblesYou/bubblesNotYou to use Compound.

* Update Compound.

ElementX/Sources/Screens/InvitesScreen/View/InvitesScreenCell.swift

@@ -90,7 +90,7 @@ struct InvitesScreenCell: View {
         VStack(alignment: .leading) {
             Text(title)
                 .font(.compound.bodyLGSemibold)
-                .foregroundColor(.element.primaryContent)
+                .foregroundColor(.compound.textPrimary)
                 .lineLimit(2)
             
             if let subtitle {
@@ -116,7 +116,7 @@ struct InvitesScreenCell: View {
     
     private var separator: some View {
         Rectangle()
-            .fill(Color.element.quinaryContent)
+            .fill(Color.compound._borderRowSeparator)
             .frame(height: 1 / UIScreen.main.scale)
     }
     
@@ -156,7 +156,7 @@ struct InvitesScreenCell: View {
     private var badge: some View {
         Circle()
             .frame(width: badgeSize, height: badgeSize)
-            .foregroundColor(.element.brand)
+            .foregroundColor(.compound.iconAccentTertiary)
     }
 }