Doc: Add CMake section about how to include .qrc files in a project

The current docs only describes how to do this in qmake. Let's use a tab
and add a CMake section.

Fixes: QTBUG-120568
Pick-to: 6.6 6.5
Change-Id: I766e92818c3e20aad5498443aa107aa369089ad0
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
(cherry picked from commit 37c2d3cda3)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/quickcontrols/doc/src/qtquickcontrols-configuration.qdoc

@@ -152,12 +152,39 @@
     is possible to provide a different configuration file for different platforms and
     locales. See \l QFileSelector documentation for more details.
 
-    Finally, the \c .qrc file must be listed in the application's \c .pro file so that
-    the build system knows about it. For example:
+    Finally, the \c .qrc file must be listed in the application's build file.
+    For example:
 
-    \code
-    RESOURCES = application.qrc
+    \if defined(onlinedocs)
+      \tab {build-qt-app}{tab-cmake}{CMakeLists.txt (CMake)}{checked}
+      \tab {build-qt-app}{tab-qmake}{.pro (qmake)}{}
+      \tabcontent {tab-cmake}
+    \else
+      \section2 Using CMake
+    \endif
+    \badcode
+      set(CMAKE_AUTORCC ON)
+      qt_add_executable(my_app
+          application.qrc
+          main.cpp
+          ...
+      )
     \endcode
+    \if defined(onlinedocs)
+      \endtabcontent
+      \tabcontent {tab-qmake}
+    \else
+      \section2 Using qmake
+    \endif
+    \badcode
+      RESOURCES = application.qrc
+      ...
+    \endcode
+    \if defined(onlinedocs)
+      \endtabcontent
+    \endif
+
+    See also: \l {Build System Integration}
 
     \section1 Related Information