* 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>