- Object rotation using quaternions
- Object translation (with keys and mouse)
- Zoom in/out
- Reset camera (lctrl + r)
- Center camera (right double click)

… fly camera

(new) Installation/cmake/modules/CGAL_setupCGAL_GLFWDependencies.cmake :
- setup dependancies and target for GLFW (with glad and stb_image) -> work in progress
- build GLFW GLAD libs and link them to the target

(modif) Installation/lib/cmake/CGAL/CGALConfig.cmake :
- creation of new targets : CGAL_Basic_viewer_Qt and CGAL_Basic_viewer_GLFW

…/cgal-public-dev into gsoc2024-basic_viewer_glfw-tgrillon

This commit add the free-fly type camera which can be toggle pressing [LCTRL+V].
- [left mouse button] : rotate the camera orientation
- [scroll] : zoom
- [UP DOWN LEFT RIGHT] : move up/down/left/right
- [LSHIFT+UP LSHIFT+DOWN] : move forward/backward

Here some additional fixtures :

- Fixing the FOV modification. Now the FOV can be increased/decreased using [LCTRL+SCROLL]
- Smooth camera translation/rotation/zoom, smooth factors can be inc/dec :
  - ['+/-' numpad] : inc/dec rotation smooth factor
  - [LCTRL+'+/-' numpad] : inc/dec translation smooth factor
  - [LCTRL+scroll] : inc/dec zoom smooth factor
- Align camera orientation to nearest axis [mouse double left click]
- All change can be reset [LCTRL+R]

- Improvement of align-to-nearest-axis system
- Rework of Line_renderer to avoid multiple calls to glDraw function
- Now, we use Line_renderer to render the clipping plane

Things that need to be done :
- Rework the load_scene method to only reload the required buffers, not all of them.

A class Clipping_plane is used to manage the computation of rotation and translation and to return the 4x4 transformation
matrix used as Model in ModelViewProjection Matrix. The implementation that follows is similar to the camera's transformation
implementation.

Clipping plane interactions :
- Rotate using [LCTRL+LEFT MOUSE BUTTON]
- Translate using [LCTRL+RIGHT MOUSE BUTTON]
- Translate along camera forward direction using [LCTRL+MOUSE WHEEL]
- Translate along clipping plane normal vector using [LCTRL+SCROLL]

…irection

- Save keyframe using [LALT+F1]
- Run/Stop the animation using [F1]

Still work to be done.

However this controller can be triggered and used only if you are using the
orbiter-type camera.

+ Refactoring of Input.h file
  + New file 'key_code.h' is use to define key code macros based on glfw3.h file : I chose to use the same key codes as glfw because lots of them are based on ASCII code which ease int/char conversion.
  + The right key mapping can be achieved by setting a keyboard layout with set_keyboard_layout(Keyboard Layout: AZERTY).
+ upgrade of 'Terminal Help' with sections and application state informations like FPS, translation/rotation speed, light color...

- Remove key_code.h because it's useless. We direclty use CGLFW macros for key codes.
+ Shortcuts modifications to match Basic viewer Qt's ones
+ Adding position/direction/center to basic viewer setter methods, allowing user to set camera position/orientation and focus point.

…he camera orientation by providing forward direction and up angle

…o clipping plane

…y) + small fixes and additions

…lane (GLFW & Qt) + cylinder/sphere feature implemented to Qt viewer

…wer (+ vertex attribute renaming)

…llon/cgal into gsoc2024-basic_viewer_glfw-tgrillon

…agement mode.