Add issue delete notifier

[badhezi]

Fixes #34591

A reference regarding the deletion of issue webhooks on GitHub: https://docs.github.com/en/webhooks/webhook-events-and-payloads?actionType=deleted#issues

[lunny]

A webhook integration test is necessary. Since there are many examples, it's not too difficult. You can add a test function at https://github.com/go-gitea/gitea/blob/main/tests/integration/repo_webhook_test.go
It's better to have a ref links to github's webhook docs in the pull request content.

[badhezi]

A webhook integration test is necessary. Since there are many examples, it's not too difficult. You can add a test function at https://github.com/go-gitea/gitea/blob/main/tests/integration/repo_webhook_test.go It's better to have a ref links to github's webhook docs in the pull request content.

I added tests for both issue and pull request delete.

It's better to have a ref links to github's webhook docs in the pull request content.

I didn't quite understand what you meant by that, can you explain?

[lunny]

A webhook integration test is necessary. Since there are many examples, it's not too difficult. You can add a test function at https://github.com/go-gitea/gitea/blob/main/tests/integration/repo_webhook_test.go It's better to have a ref links to github's webhook docs in the pull request content.

I added tests for both issue and pull request delete.

It's better to have a ref links to github's webhook docs in the pull request content.

I didn't quite understand what you meant by that, can you explain?

I updated the content and add a reference link to github's webhook documentation directly.