[examples] Fix examples to work in MSVC (#5267)

* 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>

examples/shaders/shaders_normalmap_rendering.c

@@ -113,7 +113,7 @@ int main(void)
         if (IsKeyPressed(KEY_N)) useNormalMap = !useNormalMap;
 
         // Spin plane model at a constant rate
-        plane.transform = MatrixRotateY(GetTime()*0.5f);
+        plane.transform = MatrixRotateY((float)GetTime()*0.5f);
 
         // Update shader values
         float lightPos[3] = {lightPosition.x, lightPosition.y, lightPosition.z};