Add support for nushell (#1878)

* Add support for nushell

* Update neofetch

Co-authored-by: Tyler J Russell <xtylerjrx@gmail.com>

Co-authored-by: Tyler J Russell <xtylerjrx@gmail.com>

neofetch

@@ -1745,6 +1745,12 @@ get_shell() {
             shell=${shell/Copyright*}
         ;;
 	
+        nu)
+            shell+=$("$SHELL" -c "version | get version")
+            shell=${shell/ $shell_name}
+        ;;
+
+
         *)
             shell+=$("$SHELL" --version 2>&1)
             shell=${shell/ $shell_name}