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.

widgets/cameraview_extcam.cpp

@@ -1,4 +1,5 @@
 module;
+#include <ostream>
 #include <cstring>
 #include <cstddef>
 #include <cstdint>

widgets/cameraview_extcam.cppm

@@ -2,6 +2,7 @@
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 module;
+#include <cstddef>
 #include <cstdint>
 #include <string>
 #include <atomic>

widgets/map.cpp

@@ -1,4 +1,9 @@
 module;
+#include <chrono>
+#include <limits>
+#include <mutex>
+#include <ostream>
+#include <type_traits>
 #include <cstring>
 #include <cstddef>
 #include <iterator>

widgets/map.cppm

@@ -1,4 +1,7 @@
 module;
+#include <cstddef>
+#include <deque>
+#include <unordered_map>
 #include <string>
 #include <utility>
 #include <array>

widgets/map_objects.cppm

@@ -1,4 +1,5 @@
 module;
+#include <cstddef>
 #include <memory>
 #include <array>
 #include <map>

widgets/time.cpp

@@ -1,4 +1,6 @@
 module;
+#include <ostream>
+#include <string>
 #include "utilities/Globals_macros.h"
 #include "imgui/imgui.h"
 #include "utilities/translation_macros.h"

widgets/time.cppm

@@ -1,4 +1,6 @@
 module;
+#include <deque>
+#include <unordered_map>
 #include "utilities/translation_macros.h"
 
 export module eu07.widgets.time;

widgets/vehiclelist.cpp

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

widgets/vehicleparams.cpp

@@ -1,4 +1,10 @@
 module;
+#include <chrono>
+#include <limits>
+#include <mutex>
+#include <ostream>
+#include <sstream>
+#include <type_traits>
 #include "utilities/translation_macros.h"
 #include <GLFW/glfw3.h>
 #include <array>

widgets/vehicleparams.cppm

@@ -1,4 +1,6 @@
 module;
+#include <deque>
+#include <unordered_map>
 #include <string>
 #include "utilities/translation_macros.h"
 #include "imgui/imgui.h"