give importers the headers module templates need

A template defined in a module interface is instantiated in the importing
unit, where its body's types must be complete. A declaration reaching the
importer only through the interface's global module fragment is not
enough for MSVC: cParser::operator>> uses std::stringstream, and every
unit that parsed a float got an incomplete type.

526 headers across 161 units, derived from what each interface's template
bodies actually name.

vehicle/Button.cppm

@@ -11,6 +11,8 @@ http://mozilla.org/MPL/2.0/.
 
 // animacja dwustanowa, włącza jeden z dwóch submodeli (jednego z nich może nie być)
 module;
+#include <sstream>
+#include <vector>
 #include <cstdint>
 #include <string>