feat: autogenerate vapid keys for push notifications (#3128)

* feat: Autogenerate push notification keys
* add vapid service class and remove pushkey model
* add spec for vapid service
* unset vapid env keys
* Unset VAPID_PRIVATE_KEY env variable

Co-authored-by: Sojan Jose <sojan@chatwoot.com>
Co-authored-by: Vishnu Narayanan <vishnu@chatwoot.com>

app/javascript/shared/mixins/specs/campaignMixin.spec.js

@@ -34,5 +34,4 @@ describe('campaignMixin', () => {
     const wrapper = shallowMount(Component);
     expect(wrapper.vm.isOnOffType).toBe(true);
   });
-
 });

app/javascript/widget/store/modules/events.js

@@ -2,7 +2,7 @@ import events from 'widget/api/events';
 
 const state = {
   isOpen: false,
-}
+};
 
 const actions = {
   create: async (_, { name }) => {
@@ -17,7 +17,7 @@ const actions = {
 const mutations = {
   toggleOpen($state) {
     $state.isOpen = !$state.isOpen;
-  }
+  },
 };
 
 export default {