Add: Gitattributes file to control display of auto-generated nix stuff.

Author: nc6

.gitattributes

@@ -0,0 +1,7 @@
+# GitHub Linguist annotations.
+# Hide nix/.stack.nix/*.nix
+# That is stuff that is generated by nix-tools stack-to-nix
+
+nix/.stack.nix/*.nix linguist-generated=true
+.stack-to-nix.cache linguist-generated=true
+nix/.stack-pkgs.nix linguist-generated=true