improved calls/messages/contacts implemtation

used vector image assets

app/src/main/kotlin/com/tutpro/baresip/CallRow.kt

@@ -0,0 +1,12 @@
+package com.tutpro.baresip
+
+class CallRow(val aor: String, val peerURI: String, val direction: Int, val time: String, val index: Int) {
+
+    val directions = ArrayList<Int>()
+    val indexes = ArrayList<Int>()
+
+    init {
+        directions.add(direction)
+        indexes.add(index)
+    }
+}