Fixes: Introduce a cpp settingspage containing file naming conventions (lower case and suffixes). Reorder VCS settings pages.

Task: 241959, 248085

RevBy: Optics/Naming checked by con
Details: Give IOptionPage an id() to differentiate from trName(). Make showOptionsDialog return a bool (applied) and give it an optional parent. Change Cpp and form class wizards, give them a Configure... button to change those settings.

src/plugins/cpptools/cpptools.pro

@@ -20,7 +20,8 @@ HEADERS += completionsettingspage.h \
     cpptoolseditorsupport.h \
     cpptoolsplugin.h \
     searchsymbols.h \
-    cppdoxygen.h
+    cppdoxygen.h \
+    cppfilesettingspage.h
 
 SOURCES += completionsettingspage.cpp \
     cppclassesfilter.cpp \
@@ -31,6 +32,8 @@ SOURCES += completionsettingspage.cpp \
     cpptoolseditorsupport.cpp \
     cpptoolsplugin.cpp \
     searchsymbols.cpp \
-    cppdoxygen.cpp
+    cppdoxygen.cpp \
+    cppfilesettingspage.cpp
 
-FORMS += completionsettingspage.ui
+FORMS += completionsettingspage.ui \
+    cppfilesettingspage.ui