File formats: Uppercase file types when importing a file. (#10977)

* Added uppercase extensions for supported formats

In the file App\Application.cpp

* Added file types in upper case

* Adds uppercase file types to the file import filter.

Fixes #10879

* Added filter for *.fcmacro *.fcscript

src/Gui/Application.cpp

@@ -345,7 +345,7 @@ namespace {
         std::stringstream str;
         str << "Image formats (";
         for (const auto& ext : supportedFormats) {
-            str << "*." << ext.constData() << " ";
+            str << "*." << ext.constData() << " *." << ext.toUpper().constData() << " ";
         }
         str << ")";