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.

world/EvLaunch.cpp

@@ -1,4 +1,9 @@
 module;
+#include <chrono>
+#include <limits>
+#include <mutex>
+#include <sstream>
+#include <type_traits>
 #include <cmath>
 #include <istream>
 #include <map>

world/EvLaunch.cppm

@@ -12,6 +12,7 @@ http://mozilla.org/MPL/2.0/.
 
 // radio-transmitted event launch messages
 module;
+#include <sstream>
 #include <istream>
 #include <ostream>
 #include <string>

world/Event.cpp

@@ -1,4 +1,8 @@
 module;
+#include <chrono>
+#include <mutex>
+#include <sstream>
+#include <type_traits>
 #include <array>
 #include <cstddef>
 #include <tuple>

world/MemCell.cppm

@@ -7,6 +7,10 @@ obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 module;
+#include <cstddef>
+#include <deque>
+#include <sstream>
+#include <unordered_map>
 #include <istream>
 #include <ostream>
 #include <string>

world/Segment.cpp

@@ -1,4 +1,9 @@
 module;
+#include <chrono>
+#include <mutex>
+#include <ostream>
+#include <sstream>
+#include <type_traits>
 #include <array>
 #include <string>
 #include <algorithm>

world/Segment.cppm

@@ -7,6 +7,9 @@ obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 module;
+#include <cstddef>
+#include <sstream>
+#include <string>
 #include <array>
 #include <utility>
 #include <cmath>

world/Track.cpp

@@ -1,4 +1,8 @@
 module;
+#include <chrono>
+#include <mutex>
+#include <sstream>
+#include <type_traits>
 #include <deque>
 #include <iterator>
 #include <unordered_map>

world/Track.cppm

@@ -7,6 +7,8 @@ obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 module;
+#include <cstddef>
+#include <sstream>
 #include <istream>
 #include <ostream>
 #include <utility>

world/Traction.cpp

@@ -1,4 +1,9 @@
 module;
+#include <chrono>
+#include <limits>
+#include <mutex>
+#include <sstream>
+#include <type_traits>
 #include "glad/glad.h"
 #include <cmath>
 #include <cstddef>

world/Traction.cppm

@@ -7,6 +7,8 @@ obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 module;
+#include <deque>
+#include <unordered_map>
 #include <cstddef>
 #include <istream>
 #include <ostream>

world/TractionPower.cpp

@@ -1,4 +1,5 @@
 module;
+#include <sstream>
 #include <string>
 #include <istream>
 #include <ostream>

world/TractionPower.cppm

@@ -7,6 +7,11 @@ obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 module;
+#include <cstddef>
+#include <deque>
+#include <sstream>
+#include <string>
+#include <unordered_map>
 #include <istream>
 #include <ostream>
 

world/TrkFoll.cpp

@@ -1,4 +1,5 @@
 module;
+#include <ostream>
 #include <memory>
 #include <string>
 #include <cmath>

world/mtable.cpp

@@ -1,4 +1,10 @@
 module;
+#include <chrono>
+#include <limits>
+#include <mutex>
+#include <ostream>
+#include <sstream>
+#include <type_traits>
 #include <fstream>
 #include <string>
 #include "utilities/Globals_macros.h"

world/mtable.cppm

@@ -7,6 +7,8 @@ obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 module;
+#include <utility>
+#include <vector>
 #include <string>
 
 export module eu07.world.mtable;

world/station.cpp

@@ -1,4 +1,9 @@
 module;
+#include <chrono>
+#include <limits>
+#include <mutex>
+#include <sstream>
+#include <type_traits>
 #include <algorithm>
 #include <string>
 #include "utilities/utilities_macros.h"