add steam and achivements, improve console

platform/achievements.h

@@ -0,0 +1,36 @@
+#pragma once
+#include <stdint.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Initialize Steam (if available). Optional to call.
+// If not called manually, will auto-init on first achievement set.
+void achievements_init();
+void achievements_shutdown();
+
+/// Set an achievement by its API name (if Steam available, otherwise ignored)
+/**
+ * @param id The API name of the achievement to set.
+ * @return 0 on success, -1 steam is not running (for diagnostic only)
+ */
+int8_t set_achievement(const char* id);
+
+// Clear an achievement by its API name (if Steam available, otherwise ignored)
+/**
+ * @param id The API name of the achievement to set.
+ * @return 0 on success, -1 steam is not running (for diagnostic only)
+ */
+int8_t clear_achievement(const char* id);
+
+/// returns whether steam is available
+/**
+ * @return 
+ */
+char is_steam_available();
+
+char *get_steam_status();
+
+#ifdef __cplusplus
+}
+#endif