[Feature Request] Integration with OpenSearch for typeahead and more powerful term matching

**Community Note**
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**Graph Explorer Version (and Graph Database and Version used if applicable)**
All

**Is your feature request related to a problem? Please describe.**
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**Describe the solution you'd like**
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In the upper middle search bar, all searches are made directly against Neptune using underlying Gremlin or SPARQL with inefficient string matching functions. Allow customers already using FTS to use OpenSearch to find matching nodes.

**Additional context**
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