[gaskrank] Add new extractor (#11685)

* [gaskrank] Add new extractor

* [gaskrank] Add new extractor - fixes as requested

* [gaskrank] Add new extractor - style fix

* [Gaskrank] Add new extractor - requested fixes

* [Gaskrank] Add new extractor - fix md5 checksum

* [gaskrank] Add new extractor - more requested fixes

* [Gaskrank] Add new extractor - fixed all but one quantified code issues

* [Gaskrank] add new extractor - more fields extracted, added second test

* [Gaskrank] Add new extractor - requested fixes.

* [Gaskrank] Add new extractor - requested changes.

* [Gaskrank] Add new extractor - final(?) fixes.