Add new module API `RM_GetClusterNodeSlotRanges` that allows modules
to query slot ranges for any cluster node by its node ID, not just the
local node:
```c
RedisModuleSlotRangeArray *RM_GetClusterNodeSlotRanges(RedisModuleCtx *ctx, const char *nodeid)
```
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Co-authored-by: Ozan Tezcan <[email protected]>
Co-authored-by: Yuan Wang <[email protected]>