* basic pbr example

pbr implementation  includes rpbr.h and few shader files header only file, which self contain everything needed for pbr rendering. Few textures and one model of the car which is under free licence which is included inside basic_pbr.c example file  currently supported shader versions are 120 and 330 , version 100 has small issue which I have to resolve

* Unloading PBRMAterial

I forgot unloading PBRMaterial

* fix small issue with texOffset assigment.

value was Vector4 at first but I found out it would be unclear for and users, so I change to have two Vector2 instead, but forgot to assign offset .

* Changed size of textures and file name changed

Changed size of textures from 2048x2048 to 1024x1024 and file name changed to shaders_basic_pbr.c ,
Added the function PBRModel PBRModelLoadFromMesh(Mesh mesh);
but GenMeshPlane(2, 2.0, 3, 3) culdn't be used because it crash once GenMeshTangents() is used with that plane mesh

* Update to 5.5 version  of eexample and fix to work in web

set GLSL_VERSION            100

set precision highp float;
removed in keyword
fix for loop has to use only constant

* Update shader_basic_pbr example to work on web

changed to GLSL_VERSION            100
update glsl100 shader
set float  precision  to highp
removed keyword  in
change for loop tu use constant value  gives an error

* Update shader_basic_pbr example to work on web

changed to GLSL_VERSION            100
update glsl100 shader
set float  precision  to highp
removed keyword  in
change for loop tu use constant value  gives an error

* removed rpbr.h

removed rpbr.h

* increased vertex data precision to match blender exports

* modified memory allocation to better fit higher precision data

* now accounting for newline characters during allocation

* now accounting for potentially higher vertex counts

* removed unnecessary final newline

According to https://github.com/electronstudio/raylib-python-cffi

Changed line 118 from, "// For advance camera controls, it's reecommended to compute camera movement manually", to, "// For advanced camera controls, it's recommended to compute camera movement manually".

[raylib-cpp](https://github.com/RobLoach/raylib-cpp) has been updated to use the new raylib 5.5 functions. This is a great release! Thanks so much.

The nextShapeEnd integer is a pointer in the OBJ data structures.
The faceVertIndex is a vertex index counter for the mesh we are
about to create. Both integers are not compatible, which causes
the code to finish the meshes too early, thus writing the OBJ data
incompletely into the target meshes.

It wasn't noticed because for the last mesh, it process all remaining
data, causing the last mesh to contain all remaining triangles.

This would have been noticed if the OBJ meshes used different textures
for each mesh.

Move shapes/shapes_rectangle_advanced to the correct folder in MSVC project
Add core_input_virtual_controls.vcxproj back into sln file

Tested with w64devkit/MSVC and all seem to work as expected

function