Move senseApi libs into their own outer subdir

include/preprocessor.h

@@ -0,0 +1,9 @@
+#ifndef HK_PREPROCESSOR_H
+#define HK_PREPROCESSOR_H
+
+#define HK_Q(x) #x
+#define HK_QUOTE(x) HK_Q(x)
+
+#define HK_UNMANGLED "C"
+
+#endif // HK_PREPROCESSOR_H

include/user/senseApiDesc.h

@@ -1,7 +1,11 @@
 #ifndef __USER_SENSE_API_LIB_H__
 #define __USER_SENSE_API_LIB_H__
 
-#define HK_SENSE_API_DESC_GETTER_FN_NAME "getSenseApiDescriptor"
+#include <preprocessor.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /* Exported by all sense API Libraries to tell Harikoff what API the lib uses
  * to connect to providers; and also to state which implexor APIs it exports.
@@ -21,4 +25,14 @@ struct CSenseApiDesc
     CExportedImplexorApiDesc *exportedImplexorApis;
 };
 
+#define HK_GET_SENSE_API_DESC_FN_NAME getSenseApiDesc
+#define HK_GET_SENSE_API_DESC_FN_NAME_STR \
+    HK_QUOTE(HK_GET_SENSE_API_DESC_FN_NAME)
+
+typedef const CSenseApiDesc *(getSenseApiDescFn)(void);
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif // __USER_SENSE_API_LIB_H__