RTL and LTR mixed languages fix for optimal timestamp support (#1055)

* fix

* fixed RTL and LTR timestamp for all the cases! also improved the testing

* changelog

* better and less convoluted solution

* Update ElementX/Sources/Screens/RoomScreen/View/Timeline/FormattedBodyText.swift

Co-authored-by: Alfonso Grillo <alfogrillo@gmail.com>

* pr suggestion and removed prefix in reality it creates more issues than improvements, and is not really needed

---------

Co-authored-by: Alfonso Grillo <alfogrillo@gmail.com>

ElementX/Sources/Other/Extensions/LayoutDirection.swift

@@ -0,0 +1,30 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+extension LayoutDirection {
+    var isolateLayoutUnicodeString: String {
+        switch self {
+        case .leftToRight:
+            return "\u{2066}"
+        case .rightToLeft:
+            return "\u{2067}"
+        default:
+            return ""
+        }
+    }
+}