* provide access to the shape texture so that shapes can be extended outside of raylib with the same optimizations as internal raylib functions.

* PR feedback, comply with C standards

* oops

* Implement miters in DrawSplineLinear

* Follow raylib style

This change allows more versatile and consistent splines drawing. It also gives more control to advance users to draw splines as individual segments.

RENAMED: `DrawLine<spline_type>()` to `DrawSpline<spline_type>()` for more consistent and clear naming
REVIEWED: Bezier drawing parameters order, more consistent
REVIEWED: Spline-based examples -WIP-

ImageDrawCircleLinesV already existed, so I'm not sure why this was
missing. It is trivial to implement, anyway

- `DrawLineBSpline()`
 - `DrawLineCatmullRom()`

* Update usage of 'sinf()' and 'cosf()' to be correct

* Update formatting of arithmetic operations

* Update rshapes.c

Add a much more efficient GetCollisionRec implementation

* Update GetCollisionRec

Replace macros with ternary operators

Checking `<= x + w` causes off-by-one error where `CheckCollisionPointRec` will return true at the same time for two rectangles rendered right next to each, but which don't overlap (e.g. when making a 2D tile editor). This is clearly not what was intended.

When `i` starts with `0`, `t` is also `0`, which results in `previous == startPos == current`, this segment is not only redundant, but it also causes division-by-zero since `sqrtf(dx*dx + dy*dy)` is zero.

* Fixed some grammar mistakes.

* Fixed some typos.

* Fixed bezier line breaking #2735

* converted tabs to spaces

* typo

* Changed doubles to floats

* removed heap allocations\

Co-authored-by: nobytesgiven <nobytesgiven@users.noreply.github.com>

Addresses problem mentioned in
https://github.com/raysan5/raylib/issues/2744#issuecomment-1273568263
(in short: when drawing pixels using DrawPixel{,V} in camera mode,
upscaled pixel becomes a line instead of bigger pixel)

This simplification will allow the usage of `rshapes` as STANDALONE mode in a future. Only a small set of `rlgl` functions are required and they can be "more" easely replaced if no `rlPushMatrix()`/`rlPopMatrix()` are involved.

More simplification planned for the future, maybe the textures dependencies.

Updated version to `rlgl 4.2`

* Update raylib.h

* CheckCollisionPointPolygon()

* typo

Allow to choose which modules are compiled with raylib, if some modules are excluded from compilation, required functionality is not available but smaller builds are possible.

Co-authored-by: SAOMDVN <saomdvn@users.noreply.github.com>

raylib modules have been slightly renamed to add some identity and note that they are independent modules that can be used as standalone separate parts of raylib if required.

The renamed modules are:
 - `core` -> `rcore`
 - `shapes` -> `rshapes`
 - `textures` -> `rtextures`
 - `text` -> `rtext`
 - `models` -> `rmodels`
 - `camera` -> `rcamera`
 - `gestures` -> `rgestures`
 - `core` -> `rcore`

All the build systems has been adapted to this change.