Show talk group next to nodes in list (v1.0.4)

- SvxService tracks node->TG mapping learned from talker events
- Own callsign always shown with its current TG
- Protocol carries no TG in join/leave, so others appear once they talk

app/src/main/res/values/strings.xml

@@ -18,6 +18,7 @@
     <string name="toast_node_joined">Подключился: %1$s%2$s</string>
     <string name="toast_node_left">Отключился: %1$s%2$s</string>
     <string name="node_tg_suffix"> (группа %1$d)</string>
+    <string name="node_with_tg">%1$s — TG%2$d</string>
     <string name="btn_save">Сохранить</string>
     <string name="app_version">SVXhomyak — v1.0.4</string>
     <string name="saved">Сохранено</string>