Add PIT HLD document , this PR replace previous PR#1014.#1127

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clarklee-guizhao wants to merge 4 commits intosonic-net:masterfrom clarklee-guizhao:master

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Commits on Apr 8, 2023

Add PIT HLD document.

clarklee-guizhao
authored and
zhangyanzhao
committed
Clarify why platform plugins and plan to support Platform APIs in PIT HLD.

clarklee-guizhao
authored and
zhangyanzhao
committed
Add example for platform-specific configuration file for PIT HLD.

clarklee-guizhao
authored and
zhangyanzhao
committed

Commits on Jun 29, 2023

Merge branch 'master' into master
lguohan
authored