Documentation - move Tutorials and Samples into dedicated section

Tutorials & Samples
- Bottle Tutorial
  This tutorial shows step-by-step how to create a 3D object.

- MFC Interactive Samples
  MFC sample located within samples\mfc\standard folder represents
  an interactive tutorial for learning OCCT components.
  Each sub-sample is devoted to specific OCCT domain,
  provides a set of small actions like creation of a point or a B-Spline surface,
  which is displayed in 3D Viewer and accompanied by a code snippet.
  It consists of the following parts:
   * Geometry
     Shows creation of geometrical objects (points, curves, surfaces).
   * Modeling
     Shows creation of topological objects (primitives, Boolean operations).
   * Convert
     Shows conversion of primitive geometry
     (circle, cylinder, Bézier, revolution) into B-Spline geometry.
   * Triangulation
     Shows usage of meshing algorithm on shapes.
   * Viewer2D
     Shows displaying various 2D objects in the Viewer.
   * Viewer3D
     Shows displaying 3D objects, configuring light sources,
     shading model, applying textures in the 3D Viewer, etc.
   * Animation
     Shows an animated 3D object in 3D Viewer.
   * OCAF
     Shows various operations on OCAF document.
   * HLR
     Shows usage of HLR algorithm.

- Draw Harness samples
  Draw Harness includes a set of Samples written in Tcl language
  demonstrating usage of OCCT components.
  Source code of Tcl Scripts is directly accessible and provided with comments.
  Samples are arranged into several groups:
   * Modeling
     Shows creation of a shape.
   * XDE
     Shows filling in exploration of XDE document (with colors, assembly structure, etc.).
   * Visualization
     Shows various 3D Viewer capabilities (materials, shading models, markers, Ray-Tracing).
   * Demos
     Various demonstrations.

- 3D Viewer integration
  * Qt/QWidget Viewer sample
    Qt IESample sample demonstrates OCCT 3D Viewer integration into Qt/QWidget application
    as well as model import/export functionality from/to external file.
  * Qt/QtQuick Viewer sample (Android)
    AndroidQt sample demonstrates OCCT 3D Viewer integration into Qt/QtQuick (QML) application for Android
  * C# C++/CLI WinForms sample
    WinForms sample demonstrates OCCT 3D Viewer integration into C# application
    using WinForms GUI framework via C++/CLI layer.
  * C# C++/CLI WPF sample
    WPF sample demonstrates OCCT 3D Viewer integration into C# application
    using WPF GUI framework via C++/CLI layer.
  * WebGL Viewer sample (WebAssembly)
    WebGL sample demonstrates OCCT 3D Viewer integration into Web (HTML5/JavaScript) application.
  * GLFW sample
    GLFW sample demonstrates OCCT 3D Viewer integration into GLFW application.
  * MFC Viewer sample /// TODO move out from "standard" tutorial-alike samples
    MFC Import/Export sample demonstrates OCCT 3D Viewer integration into MFC application
    as well as model import/export functionality from/to external file.
  * Java/JNI Viewer sample (Android)
    JniViewer sample demonstrates OCCT 3D Viewer integration
    into Java+JNI application for Android.
    (can be also used as a base for QtQuick-based applications for other platforms).
  * UIKit Viewer sample (iOS)
    UIKitSample sample demonstrates OCCT 3D Viewer integration into UIKit application for iOS.

- Advanced samples
  * Qt OCAF FuncDemo
    Demonstrates usage of an advanced function mechanism of OCAF.

- TODO remove useless "Qt Tutorial" ???