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/components/ChatList.vue

@@ -956,8 +956,6 @@ export default {
 </script>
 
 <style scoped lang="scss">
-@import '~dashboard/assets/scss/woot';
-
 .spinner {
   margin-top: var(--space-normal);
   margin-bottom: var(--space-normal);