VCL objects-HTTP3/QUIC

Number of APIs: 3

1. Get HTTP/3 status GET {{fastly_url}}/service/{{service_id}}/version/{{version_id}}/http3

2. Disable support for HTTP/3 DELETE {{fastly_url}}/service/{{service_id}}/version/{{version_id}}/http3

3. Enable support for HTTP/3 POST {{fastly_url}}/service/{{service_id}}/version/{{version_id}}/http3