Hip Refactor (#1359)

* compiler build

* unity dp works

* format

* fmt

* fix

* add substitutions, compiler, and their unit tests to CI

* disable runtime unit test

* minor fix

* (not compilable) visitable issue for OptimalCostState

* first try on docs

* fix machine mapping hash & refactor dp algorithm

* minor fix

* fix variant issue

* fmt

* fix

* fmt

* fix

* additional doc

* add more unit tests

* fmt

* Fix post-merge

* Add shell hook for sapling development

* changed from nullopt to std::nullopt

* fix cast issue

* Fix spdlog cmake issue

* Re-remove submodules

* minor fix & fmt

* upd tests name to match ci

* Add TEST_SUITE declaration to make tests findable by ctest

* Remove unnecessary nix files, add utils test to ci

* Fix utils tests name, format

* add tutorial

* align linear and layer_norm

* fixed style

* fixed layer_norm and linear

* Revert "add tutorial"

This reverts commit c21d66e.

* Revert "first try on docs"

This reverts commit ffa7f79.

* Revert "additional doc"

This reverts commit 6962bc8.

* Update operator_pattern.h

* "revert substitution"

* align with the newest changes of linear and layer_norm

* format

* deleted redundant function

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Co-authored-by: wmdi <[email protected]>
Co-authored-by: Colin Unger <[email protected]>
Co-authored-by: Pietro Max Marsella <[email protected]>
Co-authored-by: Mengdi Wu <[email protected]>
Co-authored-by: Qinghan Chen <[email protected]>
Co-authored-by: Reyna Abhyankar <[email protected]>