[WIP] - Basic SimpleAppMessage integration for ints.

include/clay.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <@keegan-stoneware/simple-app-message/simple-app-message.h>
+
+typedef void (*ClayUpdatedCallback)(void *context);
+
+typedef struct ClayCallbacks {
+  ClayUpdatedCallback settings_updated;
+} ClayCallbacks;
+
+void clay_init(uint32_t inbox_size);
+
+void clay_remove(const char *key);
+
+void clay_clear();
+
+void clay_set_bool(const char *key, bool value);
+
+void clay_set_data(const char *key, const void *data, size_t n);
+
+void clay_set_int(const char *key, int value);
+
+void clay_set_string(const char *key, const char *value);
+
+bool clay_get_bool(const char *key, bool *value_out);
+
+bool clay_get_data(const char *key, void *value_out, size_t n);
+
+bool clay_get_int(const char *key, int *value_out);
+
+bool clay_get_string(const char *key, char *value_out, size_t n);
+
+bool clay_register_callbacks(const ClayCallbacks *callbacks, void *context);