Please add search to the documentation pages

The new docs look great and work well when reading sections top to bottom but if I am already using the library and need some help/clarification on a specific item (e.g. a specific matcher, action etc.) it would be very helpful to search all the documentation pages and see everywhere it is referenced.

The issue does not name a file, test, or entry point. Start by locating the new documentation pages and the documentation build or publishing setup, then determine how a search across all pages could be added. Done means users can search for a specific matcher or action and find every documentation page where it is referenced.

Written by the indexing model from the issue text.