TTG: Move MatchGroup Origin field and MatchGroupTc to GHC.Hs
As in the title, towards the goal of reducing GHC-specific dependencies in the client independent Language.Haskell.Syntax modules, according to TTG, I moved both GHC specific MatchGroup
Origin
field and MatchGroupTc
data types from Language.Haskell.Syntax.Expr
to GHC.Hs.Expr