[build.zig] Refactor (#5764)

* Add better structure for build.zig

Temporarily disabled the tests

* Cleanup build.zig a bit

* Fixed zemscripten and cleanup other platforms

* Make opengl_version selection more restritive

* Add traslateC to build; Renable examples

* Add raygui build to build.zig

* Deny glfw from android target

* Fix android platform includes

* Add Zig project example

* Add Zig project mention to README

* Set right name for web build in zig example

* Cleanup last parts of build.zig

* Add linking method for build.zig

* Fix lshcore link for glfw and rgfw build.zig

* Fix weird sdl linkage build.zig

* Add zig example to zig project

* Fix win32, mac build bugs in build.zig

* Rename argument lshcore to shcore build.zig

build.zig.zon

@@ -11,6 +11,11 @@
             .hash = "N-V-__8AALShqgXkvqYU6f__FrA22SMWmi2TXCJjNTO1m8XJ",
             .lazy = true,
         },
+        .raygui = .{
+            .url = "git+https://github.com/raysan5/raygui#3b2855842ab578a034f827c38cf8f62c042fc983",
+            .hash = "N-V-__8AAHvybwBw1kyBGn0BW_s1RqIpycNjLf_XbE-fpLUF",
+            .lazy = true,
+        },
         .emsdk = .{
             .url = "git+https://github.com/emscripten-core/emsdk#4.0.9",
             .hash = "N-V-__8AAJl1DwBezhYo_VE6f53mPVm00R-Fk28NPW7P14EQ",