Add Missing Includes Across src/slic3r/GUI

Every GUI source and header now directly includes the headers declaring what it uses, rather than relying on the precompiled header or transitive includes. Generated with clang-tidy misc-include-cleaner, plus one hand edit making CalibrationPanel.hpp self-contained.

src/slic3r/GUI/TerminalDialog.cpp

@@ -4,9 +4,18 @@
 
 #include "slic3r/plugin/PythonInterpreter.hpp"
 
+#include <string>
+#include <cstddef>
+#include <wx/event.h>
+#include <wx/gdicmn.h>
+#include "slic3r/GUI/Widgets/WebViewHostDialog.hpp"
+#include <memory>
+#include <vector>
+#include <utility>
 #include <wx/sizer.h>
 
 #include <cctype>
+#include <wx/string.h>
 
 namespace Slic3r { namespace GUI {