[Fast-linkup] Added orchagents support #4134
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HLD: fast-link-up-hld.md
Depends on sonic-net/sonic-buildimage#24983 (Checkers also depends on this PR, as new CFG_SWITCH_FAST_LINKUP_TABLE_NAME definition depends on the new YANG model)
What I did
Implemented Fast-linkup feature support in Switch and Port OA including:
Why I did it
How I verified it
Which release branch to backport (provide reason below if selected)