Prune the source tree to the Release 2 build closure

Keep only what the Release 2 scope (46 targets) compiles and the build
pipeline needs, derived from the run-5 build.ninja closure (46 targets +
transitive deps) and a header scan resolved against the real -I roots of
the compile rules:

- 14133 tracked files removed (1.25 GB), incl. include/ArcGIS (1.03 GB),
  include/rti stubs (identical copies of the external RTI headers),
  out-of-scope Lts/Application, Lts/Viewer, Lts/Services/*, Lts/Tools
  generators, src/, tests/, specs/, translations/, external/
- kept: the 46 scope modules + their transitive service deps, codegen
  inputs (.xml, .grantlee), doxygen/ (configure_file at configure time),
  include/GeographicLib (libGeographicLib.so linked from the source tree),
  the 12 referenced include/ stub headers, pipeline files
  (new_docker_build_release2.sh, rpmbuild/, jenkins-ci-rme/, cmake/)
- 7 CMakeLists updated: drop add_subdirectory calls of the removed dirs
  (tests, translations, Lts/Plugins/ProjectDataManagement, qav, scripts,
  CommonUnitTestsPlaceholder, httq, LtsRestClient, LtsWebSocket,
  TopicEditorBase, ConnectDialog, StyleManager, Routing, DdsUnitTests,
  DdsUnitTestsPlaceholder, Light, Dark, Test, ExerciseManagement,
  ParticipantManagement, the 3 tools generators)

Result: 2157 tracked files (was 16290).

qt6-after/qt6-migrated-legatus/include/grantlee/cachingloaderdecorator.h

@@ -1,112 +0,0 @@
-/*
-  This file is part of the Grantlee template system.
-
-  Copyright (c) 2010 Stephen Kelly <steveire@gmail.com>
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either version
-  2.1 of the Licence, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-#ifndef GRANTLEE_CACHINGLOADERDECORATOR_H
-#define GRANTLEE_CACHINGLOADERDECORATOR_H
-
-#include "templateloader.h"
-
-#include "grantlee_templates_export.h"
-
-namespace Grantlee
-{
-
-class CachingLoaderDecoratorPrivate;
-
-/// @headerfile cachingloaderdecorator.h grantlee/cachingloaderdecorator.h
-
-/**
-  @brief Implements a loader decorator which caches compiled Template objects.
-
-  The **%CachingLoaderDecorator** can be used with any implementation of
-  Grantlee::AbstractTemplateLoader.
-
-  @code
-    auto loader = QSharedPointer<Grantlee::FileSystemTemplateLoader>::create();
-    loader->setTemplateDirs({"/path/one", "/path/two"});
-
-    auto cache =
-        QSharedPointer<Grantlee::CachingLoaderDecorator>::create( loader );
-    m_engine->addTemplateLoader( cache );
-  @endcode
-
-  The effect is that templates do not need to be loaded from the filesystem and
-  compiled into Template objects on each access, but may be returned from the
-  cache instead.
-
-  This can be significant if loading Templates in a loop, or loading the same
-  Template very often in an application.
-
-  @code
-    <ul>
-    {% for item in list %}
-      <li>{% include "itemtemplate.html" %}</li>
-    {% endfor %}
-    </ul>
-  @endcode
-
-  If the loading of Templates is a bottleneck in an application, it may make
-  sense to use the caching decorator.
-
-  @author Stephen Kelly <steveire@gmail.com>
- */
-class GRANTLEE_TEMPLATES_EXPORT CachingLoaderDecorator
-    : public AbstractTemplateLoader
-{
-public:
-  /**
-    Constructor
-  */
-  CachingLoaderDecorator(QSharedPointer<AbstractTemplateLoader> loader);
-
-  /**
-    Destructor
-  */
-  ~CachingLoaderDecorator() override;
-
-  bool canLoadTemplate(const QString &name) const override;
-
-  QPair<QString, QString> getMediaUri(const QString &fileName) const override;
-
-  Template loadByName(const QString &name,
-                      const Grantlee::Engine *engine) const override;
-
-  /**
-    Clears the Templates objects cached in the decorator.
-   */
-  void clear();
-
-  /**
-    Returns the number of Template objects cached in the decorator.
-   */
-  int size() const;
-
-  /**
-    Returns whether the cache is empty.
-   */
-  bool isEmpty() const;
-
-private:
-  Q_DECLARE_PRIVATE(CachingLoaderDecorator)
-  CachingLoaderDecoratorPrivate *const d_ptr;
-};
-}
-
-#endif