[docs] Add redesigned table of contents (#16212)

* [docs] Create a table of contents hook with all requirements

* [docs] Add workaround to keep id reference in heading

* [docs] Add redesigned

[docs] Add redesigned table of contents (#16212)

* [docs] Create a table of contents hook with all requirements

* [docs] Add workaround to keep id reference in heading

* [docs] Add redesigned table of contents components

* [docs] Apply jons styling feedback

Co-authored-by: Jon Samp <[email protected]>

* [docs] Clean up code and add latest tweaks

* [docs] Revert changes in old styling

* [docs] Add last design feedback

* [docs] Simplify the table of content hooks

* [docs] Add layout auto scroll to hook for the table of contents

* [docs] Fix linting issue

* [docs] Add tests for table of content heading helper methods

Co-authored-by: Jon Samp <[email protected]>

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[docs] Fix persisting scroll and background colors in navigation (#16248)

* [docs] Add scrolling to navigation and set proper background colors

* [docs] Add scroll persist hook for layout scroll

[docs] Fix persisting scroll and background colors in navigation (#16248)

* [docs] Add scrolling to navigation and set proper background colors

* [docs] Add scroll persist hook for layout scroll

* [docs] Reimplement scroll persist on the navigation sidebar

* [docs] Fix linting issue

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[docs] Add grid based layout component (#16226)

* [docs] Add grid based layout component

* [docs] Add scroll and content behavior in the layout