Add implementation for `simple_query_string` relevance search function in SQL and PPL#635

Merged

joshuali925 merged 10 commits intoopensearch-project:mainfrom Bit-Quill:dev-simple_query_string-#192

Jun 13, 2022

+8,676-68

Commits on Jun 2, 2022

Copy simple_query_string implementation from dev-simple_query_string-#192-impl2, since that branch was corrupted by incorrect merge.
Yury-Fridlyand
committed

Commits on Jun 3, 2022

Merge branch 'dev-simple_query_string-#192 ' into dev-simple_query_string-#192 -impl3
Yury-Fridlyand
committed

Commits on Jun 4, 2022