fix: add event fields on creating campaign (#1512)

## Ticket

-
https://linear.app/stream/issue/REACT-346/missing-event-related-fields-when-creating-campaigns

## Summary 

Add `skip_push` and `skip_webhook` params to campaign creation call.

## CLA

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- [ ] Code changes are tested

## Description of the changes, What, Why and How?

## Changelog

-

Author: kanat

src/campaign.ts

@@ -24,6 +24,8 @@ export class Campaign<StreamChatGenerics extends ExtendableGenerics = DefaultGen
       show_channels: this.data?.show_channels,
       description: this.data?.description,
       name: this.data?.name,
+      skip_push: this.data?.skip_push,
+      skip_webhook: this.data?.skip_webhook,
       user_ids: this.data?.user_ids,
     };