add inter_osw_copy_with_images_attachments.py

[MatPoppFHG]

• Add inter_osw_copy_with_images_attachments.py: a two-phase script for copying OSW pages between instances with optional dependency resolution
  • Phase 1 (collect_pages): fetches primary pages and optionally resolves File (images/attachments), Category (recursive hierarchy), and Property dependencies, dumping everything into a local page package for inspection
  • Phase 2 (push_pages): reads the local package and uploads to the target in dependency order (Properties → Categories → Files → Primary pages)
  • Includes workarounds for three library-level issues:
    • WtPage.dump() binary download returns HTML instead of binary data → re-downloads via OswExpress.download_file()
    • OswExpress.upload_file() creates a fresh UUID that mismatches the page title → uses mw_site.upload() for binary-only upload, slot content written separately via page.edit()
    • WtSite.read_page_package() skips the main slot content → manually loads it from packages.json urlPath
  • Renames file_upload_download.py → file_controller_upload_download.py

[github-actions]

Release preview

No version bump from the current commits (stays at v2.8.1). Use conventional commit types (feat, fix, ...) to trigger a release.

Changelog preview (truncated)

_{Preview via python-semantic-release and conventional commits.}