[misc] refactor launch API and tensor constructor (#5666)

* [misc] remove config arg from initialize

* [misc] remove old tensor contrusctor

* [plugin] add npu support for ddp

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* [devops] fix doc test ci

* [test] fix test launch

* [doc] update launch doc

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

colossalai/legacy/pipeline/rpc/utils.py

@@ -114,7 +114,7 @@ def run_worker(rank, args, master_func):
     port = args.master_port
     backend = "nccl" if device == "cuda" else "gloo"
 
-    launch(dict(), rank, world_size, host, int(port), backend, verbose=False)
+    launch(rank, world_size, host, int(port), backend, verbose=False)
     ppg.set_global_info(
         rank=rank,
         world_size=world_size,