Exposing internal memory allocator/free, useful for advance users when required

Pefixing/Suffixing some data type identifier in the variables is not a convention used in raylib, just reviewed it for consistency...

Still, I kept the *Rec suffix in some functions.

Previous implementation did not consider any padding while drawing the characters on screen (despite being available on the font atlas), so, only minimum character area was drawn.

If some text effect shader was required (shadow, glow, outline...), there was no space in the drawn quad to draw that pixels effect.

This commit corrects that issue.

This is a BREAKING CHANGE!

To address the linked issue, several functions have been renamed and couterpart functions have been created to free loaded memory:
 - RENAMED: GetImageData() -> LoadImageColors()
 - RENAMED: GetImagePalette() -> LoadImagePalette()
 - RENAMED: GetWaveData() -> LoadWaveSamples()
 - ADDED: UnloadImageColors()
 - ADDED: UnloadImagePalette()
 - ADDED: UnloadWaveSamples()

Previous GetKeyPressed() method was actually returning unicode codepoints equivalent values instead of the key-code of the pressed key. So, it has been replaced by GetCharPressed(), returning unicode codepoints and GetKeyPressed() now returns key-codes.

Not implemented usage of this variable yet but already setup for the future... some functions require review to consider it on drawing...

Make model collision function call the mesh function.

Let the advance users manage it as they want...

WARNING: Several functions removed, replaced by SetWindowState() / ClearWindowState() equivalents, only for advance users.
ADDED: ClearWindowState() to reset window state
REMOVED: HideWindow() / UnhideWindow()
REMOVED: DecorateWindow() / UndecorateWindow()

Some flags not working properly yet...

It returns true on success again

Not returning error code (or success), just log if it fails

* [core] Added desktop cursor getter and setter functions

* Example: Set mouse cursor in text input box

* Setup standard cursors _after_ GLFW window initialization

* Remove old `int GetMouseWheelMove` declaration

Texture type also maps to Texture2D and TextureCubemap

* rlDrawMeshInstanced first attempt

* rlDrawMeshInstanced OpenGL 3.3 and VAO checks

* rlDrawMeshInstanced GetShaderAttribLocation; comments

* example instanced shader

* RLGL_STANDALONE RAYMATH_STANDALONE Vector4

* apply suggested naming changes; add instanced mesh example

* remove orphan variables

* updated README.md

* fixed CMakeLists.txt to allow building and debugging with Visual Studio Code and CMAKE Tools extension

* added PLATFORM_DRM
contains mouse pointer code from https://github.com/chriscamacho

* removed redundant cleanup in InitGraphicsDevice

* fixed DRM connector mode selection

* added choosen DRM connected mode to log output

* added respecting TargetFPS on DRM mode selection, default to 60

* added support for GetMonitorRefreshRate

* changed SUPPORT_MOUSE_CURSOR_RPI to SUPPORT_MOUSE_CURSOR_NATIVE

* changed avoidProgressive to allowInterlaced

* cleanup, function extraction and improved mode selection

* README reverted to original for PR

* line endings fixed for core.c

* removed old code

* mouse pointer reverted to small square

* replaced SetGraphicDeviceName() by DEFAULT_GRAPHIC_DEVICE_DRM

Co-authored-by: kernelkinetic <kernelkinetic@outlook.com>

Added some tracelog messages

Functions have been redesigned to use rlgl and allow to externalize them (aka removing them from rlgl because they use custom shaders...).

Not required anymore, attachment type is queried when required

Also updated raylib Wiki about struct sizes in 32bit and 64bit

Replaced Vector3 by direct values, easier to use and understand

rlBlendMode() has been added to rlgl to be used on BLEND_CUSTOM. This functionality is exposed to advance users.

In any case, new blending modes could be added if required.

Co-authored-by: max <max.cedercreutz@cetopo.com>

* MeshSmoothNormals() by average

* wrong comment

* spelling

* use correct function naming convention

Reason for removal: This function forces a specific Image data format, it copies data internally (it could be confusing and lead to memory leaks), it's redundant, there is a simpler alternative and raylib promotes using structures directly