[docs] Add basic documentation on using Snippets to DocC documentation#1166

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heckj wants to merge 3 commits intoswiftlang:mainfrom heckj:snippets-docs

Commits on Mar 5, 2025

Initial work on snippets documentation

heckj
and
Jacob Hearst
committed
consolidate copyright statements at bottom of markdown files and add a newline to the end of the file
heckj
committed

Commits on Mar 9, 2025

enables Snippet directive code for documentation, and updates the generated symbolgraph with that change
heckj
committed