This adds a new Template result format that uses Handlebars.Net for
flexible report customization. Users can now create fully customized
reports using Handlebars syntax, replacing the limited token-based
approach.
Features:
- New Template export format with Handlebars support
- Built-in templates: default, email, html, slack
- Custom template support via file path or inline content
- Helper functions for formatting: formatSize, formatDuration,
formatDate, eq, statusClass, eachProperty
- Full access to result data, log lines, and exceptions