feat: Add REST Interceptors which support reading metadata (#884)

* feat: Add REST Interceptors which support reading metadata
feat: Add support for reading selective GAPIC generation methods from service YAML
chore: Update gapic-generator-python to v1.22.0

PiperOrigin-RevId: 724026024

Source-Link: googleapis/googleapis@ad99638

Source-Link: https://github.com/googleapis/googleapis-gen/commit/e291c4dd1d670eda19998de76f967e1603a48993
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* 🦉 Updates from OwlBot post-processor

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

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Lingqing Gan <lingqing.gan@gmail.com>

Author: gcf-owl-bot[bot]

bigquery_storage/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1.json

@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-bigquery-storage",
-    "version": "2.28.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {

bigquery_storage/generated_samples/snippet_metadata_google.cloud.bigquery.storage.v1beta2.json

@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-bigquery-storage",
-    "version": "2.28.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {