feat(theme): add Polarized and Suri purple dark themes

frontend/src/index.css

@@ -13,6 +13,8 @@
 @import './themes/theme-light.css';
 @import './themes/theme-high-contrast.css';
 @import './themes/theme-soft.css';
+@import './themes/theme-polarized.css';
+@import './themes/theme-suri.css';
 
 @tailwind base;
 @tailwind components;