feat: Add support for dark mode in dashboard (#7460)

- Add config for TailwindCSS
- Enable HMR
- Add a config in LocalStorage for Dark Mode

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/dashboard/assets/scss/_woot.scss

@@ -1,3 +1,7 @@
+@import 'tailwindcss/base';
+@import 'tailwindcss/components';
+@import 'tailwindcss/utilities';
+
 @import 'shared/assets/fonts/plus-jakarta';
 @import 'shared/assets/stylesheets/animations';
 @import 'shared/assets/stylesheets/colors';
@@ -67,3 +71,8 @@
 @import 'plugins/dropdown';
 @import '~shared/assets/stylesheets/ionicons';
 @import 'utility-helpers';
+
+
+.tooltip {
+  @apply bg-slate-900 text-white py-1 px-2 z-40 text-xs rounded-md dark:bg-slate-200 dark:text-slate-900;
+}