Add support for the Clarion language

Clarion is a Rapid Application Development tool (RAD) with a 4th Generation language. The language was create by Bruce Barrington back in the early 1980 and operated in DOS until Clarion for Windows came out in 1994.

Some examples of Clarion on GitHub:
https://github.com/devroadmaps/DevroadmapsClarionLibrary
https://github.com/fushnisoft/ClarionMetroWizard
https://github.com/CarlosGtrz/ClarionJson
https://github.com/MarkGoldberg/ClarionCommunity
https://github.com/MarkGoldberg/CwUnit
https://github.com/Rick-UpperPark/ClarionLiveDLLTutor
https://github.com/ClarionLive?tab=repositories