Rebrand Nostore to Nostash and set minimum deployment to iOS 18.0

tailwind.config.js

@@ -2,7 +2,14 @@
 module.exports = {
     content: ['./Shared*/**/*.{html,js}'],
     theme: {
-        extend: {},
+      extend: {
+        colors: {
+          'nostash-blue': '#0a3b66',
+          'nostash-gold': '#f4b731',
+          'nostash-gold-dark': '#d29e2a',
+          'nostash-gold-light': '#f9d57a',
+        },
+      },
     },
     plugins: [require('@tailwindcss/forms')],
 };