Show descriptions for locations.

Descriptions show in the same message bubble above the map in
the timeline, and in a bar at the top of the expanded map view.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/EventContent.kt

@@ -128,6 +128,7 @@ data class ImageMessageType(
 data class LocationMessageType(
     val body: String,
     val geoUri: String,
+    val description: String?,
 ) : MessageType
 
 data class AudioMessageType(