Add form jira issue creation setting to Jira integration from

Add setting to the Jira integration form which allows enabling the Jira issue creation via form. This setting is disabled by default and exists of a checkbox with a title and description.

Setting name: customize_jira_issue_enabled

Design

Implementation plan

• backend Add new setting to Jira integration configuration
• frontend Show checkbox setting in Jira integration form
• documentation Update documentation that explains this setting