fix: add missing import

The header file is falsely identified by the IDE as unused, however, it is neccessary for the osmium reader to support different input formats.

src/osm-transform.cpp

@@ -9,6 +9,7 @@
 
 #include <boost/regex.hpp>
 
+#include <osmium/io/any_input.hpp>
 #include <osmium/io/any_output.hpp>
 #include <osmium/util/file.hpp>
 #include <osmium/util/progress_bar.hpp>