Fix GitHub Actions build and plugin checks (closes #40)

[9jaDevo]

What this does

• Adjusts the GitHub Actions workflow (.github/workflows/wordpress-plugin-check.yml) to:
  • Exclude hidden files and folders from the plugin check
  • Ensure rsync/prepare() usage to satisfy PHPCS
• Cleans up the SQL calls in:
  • classes/admin/class-paywaydata-list-table.php
  • classes/class-wc-tpayway.php
    so that all queries use $wpdb->prepare() correctly and caching
• Adds missing translators: comments and escaping where flagged
• Bumps the “Tested up to” header in the plugin main file to 6.8

Why this is needed

The build has been failing in CI (GitHub Actions) due to:

• PHPCS errors around direct DB queries and missing placeholders
• Hidden files being processed in the plugin check
• Outdated “Tested up to” header filtering the plugin in searches

This PR brings the repo back into a green build state and full compliance with WordPress.org requirements.

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Status: Open
Related issue: #40 (opened Dec 1, 2024)

[9jaDevo]

@marinsagovac

[9jaDevo]

@marinsagovac Have you looked into these.