feat: Show next available day/hour and minutes on widget (#6902)

* feat: Show next available hour and minutes on widget

* chore: Adds spec

* chore: Show days

* chore: Code clean up

* chore: Review fixes

* chore: Minor fixes

* chore: Review suggestion fixes

* chore: Minor fixes

* Added timezone to widget payload

* chore: Adds time zone

* chore: Review fixes

* chore: Adds comments

* chore: Rounded up min with nearest multiple of 5

* chore: Review fixes

* chore: Review fixes

* chore: Review fixes

* chore: Review fixes

* chore: Fix specs

* chore: Review fixes

* chore: Fix specs

* chore: Review fixes

* chore: Moved day names to i18n

* chore: Review fixes

* chore: Fix specs

---------

Co-authored-by: Tejaswini Chile <tejaswini@chatwoot.com>
Co-authored-by: Nithin David Thomas <1277421+nithindavid@users.noreply.github.com>
Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

app/views/widgets/show.html.erb

@@ -24,6 +24,7 @@
         workingHours: <%= @web_widget.inbox.working_hours.to_json.html_safe %>,
         outOfOfficeMessage: <%= @web_widget.inbox.out_of_office_message.to_json.html_safe %>,
         utcOffset: '<%= ActiveSupport::TimeZone[@web_widget.inbox.timezone].now.formatted_offset %>',
+        timezone: '<%= @web_widget.inbox.timezone %>',
         allowMessagesAfterResolved: <%= @web_widget.inbox.allow_messages_after_resolved %>,
         disableBranding: <%= @web_widget.inbox.account.feature_enabled?('disable_branding') %>
       }