add crtolf script

scripts/crtolf.fish

@@ -0,0 +1,14 @@
+#!/usr/bin/env fish
+
+for f in (find . -type f)
+   set ftype    (file -b --mime-type "$f")
+   set basetype (string split "/" "$ftype")
+
+   if test "$basetype[1]" = "text"
+      set tmp (mktemp)
+      mac2unix -n "$f" "$tmp"
+      mv "$tmp" "$f"
+   end
+end
+
+## EOF