Expose simple API to select a single adb device

Select an adb device from the output of `adb device -l`.

PR #3005 <https://github.com/Genymobile/scrcpy/pull/3005>

app/src/adb/adb_parser.c

@@ -104,6 +104,8 @@ sc_adb_parse_device(char *line, struct sc_adb_device *device) {
         device->model = NULL;
     }
 
+    device->selected = false;
+
     return true;
 }