build: patch around qt duplicate symbol issue

This is currently causing the same failure in two different PRs:
```bash
duplicate symbol 'lcQpaFonts()' in:
    /tmp/cirrus-ci-build/depends/x86_64-apple-darwin/lib/libQt5ThemeSupport.a(qgenericunixthemes.o)
    /tmp/cirrus-ci-build/depends/x86_64-apple-darwin/lib/libQt5FontDatabaseSupport.a(qfontengine_coretext.o)
ld: 1 duplicate symbol for architecture x86_64
```

```bash
x86_64-apple-darwin-ld: error: duplicate symbol: __Z10lcQpaFontsv
>>> defined in /tmp/cirrus-ci-build/depends/x86_64-apple-darwin/lib/libQt5ThemeSupport.a(qgenericunixthemes.o)
>>> defined in /tmp/cirrus-ci-build/depends/x86_64-apple-darwin/lib/libQt5FontDatabaseSupport.a(qfontengine_coretext.o)
```

Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/depends/patches/qt/duplicate_lcqpafonts.patch b/depends/patches/qt/duplicate_lcqpafonts.patch
new file mode 100644
index 0000000000..c460b51dcf
--- /dev/null
+++ b/depends/patches/qt/duplicate_lcqpafonts.patch
@@ -0,0 +1,104 @@
+QtGui: Fix duplication of logging category lcQpaFonts
+
+Move it to qplatformfontdatabase.h.
+
+Upstream commit:
+ - Qt 6.0: ab01885e48873fb2ad71841a3f1627fe4d9cd835
+
+--- a/qtbase/src/gui/text/qplatformfontdatabase.cpp
++++ b/qtbase/src/gui/text/qplatformfontdatabase.cpp
+@@ -52,6 +52,8 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
++Q_LOGGING_CATEGORY(lcQpaFonts, "qt.qpa.fonts")
++
+ void qt_registerFont(const QString &familyname, const QString &stylename,
+                      const QString &foundryname, int weight,
+                      QFont::Style style, int stretch, bool antialiased,
+
+--- a/qtbase/src/gui/text/qplatformfontdatabase.h
++++ b/qtbase/src/gui/text/qplatformfontdatabase.h
+@@ -50,6 +50,7 @@
+ //
+ 
+ #include <QtGui/qtguiglobal.h>
++#include <QtCore/qloggingcategory.h>
+ #include <QtCore/QString>
+ #include <QtCore/QStringList>
+ #include <QtCore/QList>
+@@ -62,6 +63,7 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
++Q_DECLARE_LOGGING_CATEGORY(lcQpaFonts)
+ 
+ class QWritingSystemsPrivate;
+ 
+
+--- a/qtbase/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
++++ b/qtbase/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
+@@ -86,8 +86,6 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-Q_LOGGING_CATEGORY(lcQpaFonts, "qt.qpa.fonts")
+-
+ static float SYNTHETIC_ITALIC_SKEW = std::tan(14.f * std::acos(0.f) / 90.f);
+ 
+ bool QCoreTextFontEngine::ct_getSfntTable(void *user_data, uint tag, uchar *buffer, uint *length)
+
+--- a/qtbase/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h
++++ b/qtbase/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h
+@@ -64,8 +64,6 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-Q_DECLARE_LOGGING_CATEGORY(lcQpaFonts)
+-
+ class QCoreTextFontEngine : public QFontEngine
+ {
+     Q_GADGET
+
+--- a/qtbase/src/platformsupport/fontdatabases/windows/qwindowsfontdatabase.cpp
++++ b/qtbase/src/platformsupport/fontdatabases/windows/qwindowsfontdatabase.cpp
+@@ -68,8 +68,6 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-Q_LOGGING_CATEGORY(lcQpaFonts, "qt.qpa.fonts")
+-
+ #ifndef QT_NO_DIRECTWRITE
+ // ### fixme: Consider direct linking of dwrite.dll once Windows Vista pre SP2 is dropped (QTBUG-49711)
+ 
+
+--- a/qtbase/src/platformsupport/fontdatabases/windows/qwindowsfontdatabase_p.h
++++ b/qtbase/src/platformsupport/fontdatabases/windows/qwindowsfontdatabase_p.h
+@@ -63,8 +63,6 @@
+ 
+ QT_BEGIN_NAMESPACE
+ 
+-Q_DECLARE_LOGGING_CATEGORY(lcQpaFonts)
+-
+ class QWindowsFontEngineData
+ {
+     Q_DISABLE_COPY_MOVE(QWindowsFontEngineData)
+
+--- a/qtbase/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
++++ b/qtbase/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
+@@ -40,6 +40,7 @@
+ #include "qgenericunixthemes_p.h"
+ 
+ #include "qpa/qplatformtheme_p.h"
++#include "qpa/qplatformfontdatabase.h"
+ 
+ #include <QtGui/QPalette>
+ #include <QtGui/QFont>
+@@ -76,7 +77,6 @@
+ QT_BEGIN_NAMESPACE
+ 
+ Q_DECLARE_LOGGING_CATEGORY(qLcTray)
+-Q_LOGGING_CATEGORY(lcQpaFonts, "qt.qpa.fonts")
+ 
+ ResourceHelper::ResourceHelper()
+ {