[Static Runtime] Use F14FastMap/F14FastSet (#63999)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63999
Use folly::F14FastMap/F14FastSet instead of std::unordered_map/unordered_set in the Static Runtime code base. folly::F14FastMap/F14FastSet implements the same APIs as std::unordered_map/unordered_set but faster. For details see https://github.com/facebook/folly/blob/master/folly/container/F14.md
Reviewed By: d1jang
Differential Revision: D30566149
fbshipit-source-id: 20a7fa2519e4dde96fb3fc61ef6c92bf6d759383
