chore: extract strings file to strings_func like in spark grouping - #1215

chore: extract strings file to strings_func like in spark grouping#1215

andygrove merged 5 commits into

apache:mainapache/datafusion-comet:mainfrom

rluvaton:move-string-expressionsrluvaton/datafusion-comet:move-string-expressionsCopy head branch name to clipboard