chore(l10n): update Spanish (American) translations

Currently translated at 1.8% (2 of 110 strings)

Translation: Fossify/Messages
Translate-URL: https://hosted.weblate.org/projects/fossify/sms-messenger/es_US/
Via: Weblate

Author: matheusc457

app/src/main/res/values-es-rUS/strings.xml

@@ -1,2 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources></resources>
+<resources>
+    <string name="app_launcher_name">Mensajes</string>
+    <string name="type_a_message">Escriba un mensaje…</string>
+</resources>