Feat: Show working hours on widget (#1823)

Feat: Display out of office message based on business hours

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/javascript/widget/mixins/configMixin.js

@@ -46,5 +46,8 @@ export default {
           return this.$t('REPLY_TIME.IN_A_FEW_HOURS');
       }
     },
+    outOfOfficeMessage() {
+      return this.channelConfig.outOfOfficeMessage;
+    },
   },
 };