Format the codebase with Fourmolu

Cabal-syntax/Setup.hs

Cabal-syntax/src/Distribution/Backpack.hs

Cabal-syntax/src/Distribution/CabalSpecVersion.hs

Cabal-syntax/src/Distribution/Compat/Binary.hs

Cabal-syntax/src/Distribution/Compat/CharParsing.hs

Cabal-syntax/src/Distribution/Compat/DList.hs

Cabal-syntax/src/Distribution/Compat/Exception.hs

Cabal-syntax/src/Distribution/Compat/Graph.hs

Cabal-syntax/src/Distribution/Compat/Lens.hs

Cabal-syntax/src/Distribution/Compat/MonadFail.hs

Cabal-syntax/src/Distribution/Compat/Newtype.hs

Cabal-syntax/src/Distribution/Compat/NonEmptySet.hs

Cabal-syntax/src/Distribution/Compat/Parsing.hs

Cabal-syntax/src/Distribution/Compat/Prelude.hs

Cabal-syntax/src/Distribution/Compat/Semigroup.hs

Cabal-syntax/src/Distribution/Compat/Typeable.hs

Cabal-syntax/src/Distribution/Compiler.hs

Cabal-syntax/src/Distribution/FieldGrammar.hs

Cabal-syntax/src/Distribution/FieldGrammar/Class.hs

Cabal-syntax/src/Distribution/FieldGrammar/FieldDescrs.hs