SB-186: Springify the indexer
SB-186: Springify the indexer

Extract the indexing related code into a separate module.

nenko-tabakov/strongbox,korest/strongbox,sbespalov/strongbox,ivanursul/strongbox,strongbox/strongbox,baisjuan/strongbox,AlexOreshkevich/strongbox,ivanursul/strongbox,strongbox/strongbox,sbespalov/strongbox,sbespalov/strongbox,sbespalov/strongbox,strongbox/strongbox,strongbox/strongbox