[🚀site/chore]: create a workflow to create/update/resolve issue in case StatusCake integration detects site issue

[ala-n]

As an ESL maintainer, I want to have an automated process to report site problems detected by the outside service (in our case Status Cake).

Behavior:

• GitHub workflow runs once an event is received by the webhook or by the cron scheduler if the webhook does not work.
• The workflow creates a specially marked (fixed title or special label) issue on the project (credentials to be provided by the repository secrets).
• The workflow closes the issue automatically in case the service reports a successful check. (Note to self: close with a clear comment that the issue is closed by a successful status).
• The workflow provides a compact but informative status of the check in the issue and updates it if required while the status is not successful.

Technical details:

1. Use a test repository to check the workflow first.
2. Use official and recommended actions to manipulate GitHub entries (issues, comments).

[fshovchko]

Test repository for status check workflow: fshovchko/status-check#1

[fshovchko]

The issue created by bot looks like this: