Adding git hash info to version output line (#572)

src/include/git_version.h

@@ -0,0 +1,12 @@
+/*************************************************************************
+ * Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * See LICENSE.txt for license information
+ ************************************************************************/
+
+#ifndef RCCL_GIT_VERSION_H_
+#define RCCL_GIT_VERSION_H_
+
+extern const char *rcclGitHash;
+
+#endif