feat: add Graham Scan convex hull algorithm (#14251)

* feat: add Graham Scan convex hull algorithm

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* fix: address pre-commit issues

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* chore: Algorithm-Keeper's comments addressed

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: John Law <johnlaw.po@gmail.com>
Co-authored-by: Christian Clauss <cclauss@me.com>