style(theme): Add Nord theme (anuraghazra#314)

* Add Nordtheme

adding a www.nordtheme.com inspired theme using nord0, nord4, nord8 & nord9

* Update index.js

Author: Algo-ryth-mix

themes/index.js

@@ -143,6 +143,12 @@ const themes = {
     text_color: "859900",
     bg_color: "fdf6e3",
   },
+  nord: {
+    title_color: "81a1c1",
+    text_color: "d8dee9",
+    icon_color: "88c0d0",
+    bg_color: "2e3440",
+  },
 };
 
 module.exports = themes;