v0.9.5 - add search_ and context string helper

Add search_ and deprecate _search (#342)

* add search_ and deprecate _search. Add formatting helper

* add search helpers file

* move SearchResults

* Update graphiti_core/search/search_helpers.py

Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>

* remove unused imports

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Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>