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/prompt/shell_space.nu

@@ -0,0 +1,21 @@
+# use shells to to show workspaces
+def workspaces [] {
+    shells | each {|item index|
+      if $item.active {
+        $"(ansi green)($index) "
+      } else {
+        $"(ansi blue)($index) "
+      }
+    }| str join
+}
+
+def create_right_prompt [] {
+    let time_segment = ([
+        (date now | format date '%r'),
+        " ",
+        (workspaces)
+    ] | str join)
+    $time_segment
+}
+
+$env.PROMPT_COMMAND_RIGHT = { create_right_prompt }