Add VideoIntelligence Generation Metadata (#1451)
Add VideoIntelligence Generation Metadata (#1451)

This PR was generated using Autosynth. :rainbow:

Here's the log from Synthtool:
```
synthtool > Cloning googleapis.
synthtool > Ensuring dependencies.
synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
Digest: sha256:90f9d15e9bad675aeecd586725bce48f5667ffe7d5fc4d1e96d51ff34304815b
Status: Image is up to date for googleapis/artman:latest
synthtool > Running generator for google/cloud/videointelligence/artman_videointelligence_v1.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-video-intelligence-v1.
synthtool > Running generator for google/cloud/videointelligence/artman_videointelligence_v1beta2.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-video-intelligence-v1beta2.
synthtool > Replaced 'Copyright \\d{4}' in src/V1/Gapic/VideoIntelligenceServiceGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in src/V1beta2/Gapic/VideoIntelligenceServiceGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in src/V1/VideoIntelligenceServiceClient.php.
synthtool > Replaced 'Copyright \\d{4}' in src/V1beta2/VideoIntelligenceServiceClient.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V1/VideoIntelligenceServiceClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V1beta2/VideoIntelligenceServiceClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/System/V1/VideoIntelligenceServiceSmokeTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/System/V1/VideoIntelligenceServiceClientTest.php.
synthtool > Replaced '^(\\s+\\*\\n)?\\s+\\*\\s@experimental\\n' in src/V1/VideoIntelligenceServiceClient.php.
synthtool > Replaced '^(\\s+\\*\\n)?\\s+\\*\\s@experimental\\n' in src/V1/Gapic/VideoIntelligenceServiceGapicClient.php.
synthtool > Cleaned up 1 temporary directories.
synthtool > Wrote metadata to synth.metadata.

```
googleapis/google-cloud-php-videointelligence,googleapis/google-cloud-php-videointelligence