It was not working on Windows 10

Added some comments to loader function...

raudio AudioBuffer internal struct collides on macOS with CoreAudio same name struct. In this case struct has been renamed because is internal to raudio... but probably all system should be redesigned.

Custom implementation that returns -1 if it fails (no negative values supported)

...while using a RenderTexture combined with 3d mode

REDESIGNED: rlLoadRenderTexture()
ADDED: rlRenderTextureAttach()
ADDED: rlRenderTextureComplete()

Probably uncomplete, not tested yet...

Getting the following strict error....

```
src/text.c:117:105: error: constant expression evaluates to 2398692640 which
      cannot be narrowed to type 'int' [-Wc++11-narrowing]
...0x00000000, 0x00000000, 0x00200020, 0x0001b000, 0x00000000, 0x00000000, 0x8ef92520, 0x00020a00...
                                                                             ^~~~~~~~~~
```

Switching it to an unsigned int fixes it.

clang was complaining about the type conversions. For example...
```
node_modules/raylib-src/src/core.c:1888:15: error: cannot initialize a variable of type 'char *' with an
      rvalue of type 'void *'
        char *cmd = calloc(strlen(url) + 10, sizeof(char));
              ^     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```

Function provisional renaming... that's not the end of this issue...