[BUILD] Move code generation to python from CMake (#1360)

* Use generate.py for func generation

* Convert AddUnroll.cmake to bash

[ROCm/rccl commit: 2dd10c8f17]

projects/rccl/src/include/nccl_common.h

@@ -13,7 +13,7 @@ typedef enum {NCCL_INIT=1, NCCL_COLL=2, NCCL_P2P=4, NCCL_SHM=8, NCCL_NET=16, NCC
 typedef void (*ncclDebugLogger_t)(ncclDebugLogLevel level, unsigned long flags, const char *file, int line, const char *fmt, ...);
 
 #define NCCL_NUM_ONERANK 12
-#define FUNC_INDEX_TOTAL 980 + NCCL_NUM_ONERANK
+#define FUNC_INDEX_TOTAL 656 + NCCL_NUM_ONERANK
 
 #define NCCL_NUM_FUNCTIONS 5 // Send/Recv not included for now
 typedef enum {