add enable_offload_queue to PipelineParallel

[GuoxiaWang]

PR types

New features

PR changes

APIs

Description

增加一个Flag给 PipelineParallel 使用，在特定情况下可以开启 OffloadQueue

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.77%. Comparing base (5ad7a9c) to head (1171bf0).
Report is 229 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9708      +/-   ##
===========================================
- Coverage    52.99%   52.77%   -0.23%     
===========================================
  Files          671      718      +47     
  Lines       109835   112370    +2535     
===========================================
+ Hits         58212    59302    +1090     
- Misses       51623    53068    +1445     

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[ForFishes]

LGTM