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/with_externals/README.md

@@ -0,0 +1,7 @@
+# With Externals
+
+This folder includes various nushell scripts that require installing an external program in order to work.
+
+### Contributing
+
+Please include the name of the program and, if possible, basic installation instructions, as part of your script.

dot_config/nushell/nu_scripts/modules/with_externals/loc.nu

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+# This script requires that `tokei` be installed and available!
+
+# Count lines of code in a project.
+export def main [
+    ...rest # args to pass to tokei
+] {
+    tokei -o json ...$rest |
+    from json |
+    transpose |
+    rename lang lines |
+    insert files { get lines.reports | length } |
+    select lang files lines.code lines.comments lines.blanks
+}
+