Update Crate and Examples

Source/Library.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+namespace Library
+{
+#endif
+
+#ifdef __cplusplus
+    extern "C"
+    {
+#endif
+
+        float Add(float num1, float num2);
+
+        float Divide(float num1, float num2);
+
+        float Multiply(float num1, float num2);
+
+        float Subtract(float num1, float num2);
+
+#ifdef __cplusplus
+    }
+#endif
+
+#ifdef __cplusplus
+}
+#endif