Add --skip_authors and --skip_terms as additional flags

[kiranpotphode]

This PR introduces --skip_authors and --skip_terms flags for wp export command.

Fixes: #72

[codecov]

Welcome to Codecov 🎉

Once you merge this PR into your default branch, you're all set! Codecov will compare coverage reports and display results in all future pull requests.

Thanks for integrating Codecov - We've got you covered ☂️

[Copilot]

Pull Request Overview

This PR adds functionality to skip authors and terms (categories, tags, custom taxonomy terms, and nav menu terms) from WordPress export files. The implementation follows the existing pattern used by the --skip_comments flag.

Key Changes:

• Added --skip_authors and --skip_terms command-line flags
• Implemented exclusion mechanism in WP_Export_Split_Files_Writer to filter out specified sections
• Modified before_posts() method signature to accept available sections parameter

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/Export_Command.php	Added CLI parameters and validation methods for --skip_authors and --skip_terms flags, populating the $exclude array based on user input
src/WP_Export_Split_Files_Writer.php	Implemented section exclusion logic and updated before_posts() call to pass filtered sections
features/export.feature	Added test scenarios for the new skip flags

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The exclusion logic removes sections from $this->available_sections after it has already been used to calculate $this->subsequent_sections (line 45). This means excluded sections will still be present in subsequent files when using --include_once. The exclusion logic should be moved before line 44 to ensure excluded sections are properly removed from both $this->available_sections and $this->subsequent_sections.