Code deduplication:
- combine 3 existing client side hooks into useSearchStrategy
- combine server side multiple search strategy files into shared search_strategy_provider.ts
- Clarified naming (client/server params, strategy naming etc.), improved types.
- None of the actual deeper internal logic changed, larger chunks of code that show up as new lines is mostly just moved code + additional types (e.g. function overloads) to support the different search strategies with the same server side code and client side hook.