* Fix warnings in many examples
Add examples to MSVC solution correctly

* fix CI error

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Co-authored-by: Ray <raysan5@gmail.com>

...so it will always prioritize local version of raylib instead of
system-wide installations, which is a huge problem when testing any
changes done locally to raylib as it might cause silent mismatch issues.
There were only 4 examples affected by this issue which were using
`#include <raylib.h>`. Other examples use proper `#include "raylib.h"`

Fixes: https://github.com/raysan5/raylib/issues/4820

Co-authored-by: Anstro Pleuton <anstropleuton@github.com>

* Update examples inconsistencies

* Happy new years, examples!

* Missed one inconsistency

* Update final few examples inconsistencies

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Co-authored-by: Anstro Pleuton <anstropleuton@github.com>

* created ImageFromChannel

Adds the possibility to extract a specific channel from an image

* naming convention

* example window height

* removed threshold

* removed alpha channel

* channel example organization

* updated channel example image