docs: add auto-generated samples (#309)

* chore: copy samples
🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

chore: use gapic-generator-python 0.63.4

chore: fix snippet region tag format
chore: fix docstring code block formatting
PiperOrigin-RevId: 430730865

Source-Link: googleapis/googleapis@ea58002

Source-Link: https://github.com/googleapis/googleapis-gen/commit/ca893ff8af25fc7fe001de1405a517d80446ecca
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiY2E4OTNmZjhhZjI1ZmM3ZmUwMDFkZTE0MDVhNTE3ZDgwNDQ2ZWNjYSJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: add samples dir

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Author: 3 people

packages/google-cloud-vision/owlbot.py

@@ -100,6 +100,7 @@
 
     # Move docs configuration
     s.move(library / f"docs/conf.py")
+    s.move(library / "samples")
 
 s.remove_staging_dirs()