Changed . token to _dot

This change allows the dotfiles to work with chezmoi (e.g: on windows)
and improves grepability with neovim/telescope

dot_config/nushell/nu_scripts/modules/duplicates/example.nu

@@ -0,0 +1,15 @@
+# duplicates example
+use mod.nu *
+
+let info = "[{name: "John", lastname: "Doe"}, {name: "John", lastname: "Roe"}, {name: "Jane", lastname: "Soe"}]"
+print ($info | from json)
+print ($info | from json | duplicates name)
+
+#duplicates files example
+echo A | save A.txt
+echo A | save B.txt 
+# note that if I used "echo B | save B.txt" the function will give a false positive
+echo ABC | save C.txt
+print (ls)
+print (duplicates files)
+rm A.txt B.txt C.txt --permanent