File reorganization as per the new defined standard

The header files will in /opt/rocm-xxx/include/rccl
Libraries and cmake will be in /opt/rocm-xxx/lib folder.
Added wrappers for header files using rocm-cmake functions for backward compatibility.

test/common/TestBed.cpp

@@ -5,7 +5,7 @@
  ************************************************************************/
 #include <unistd.h>
 #include "TestBed.hpp"
-#include <rccl.h>
+#include <rccl/rccl.h>
 
 #define PIPE_WRITE(childId, val)                                        \
   ASSERT_EQ(write(childList[childId]->parentWriteFd, &val, sizeof(val)), sizeof(val))