Show location events in timeline

Not in scope: interacting with the timeline items,
reply formatting. These will be implemented separately.

Closes #689

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

@@ -125,6 +125,11 @@ data class ImageMessageType(
     val info: ImageInfo?
 ) : MessageType
 
+data class LocationMessageType(
+    val body: String,
+    val geoUri: String,
+) : MessageType
+
 data class AudioMessageType(
     val body: String,
     val source: MediaSource,