Include git-golden

flake.lock

flake.nix

rtree/package.yaml

rtree/rtree.cabal

rtree/src/Control/Monad/RTree.hs

rtree/src/Control/Monad/Reduce.hs

rtree/test/expected/rexpr.txt/golden

rtree/test/expected/small-let-expr.txt

rtree/test/expected/small-opr-expr.txt

rtree/test/src/Control/Monad/RTreeSpec.hs

rtree/test/src/Test/Hspec/GitGolden.hs