Feat: Add REV 19 encryption certificate and contract schema

[Sashwat-K]

This PR updates the provider with REV 19 encryption certificate and contract schema.

Tested with LogDNA

null_resource.sashwatk_compose_hpvs_curl (local-exec): Executing: ["/bin/sh" "-c" "cat output/result.json"]
null_resource.sashwatk_compose_hpvs_curl (local-exec): {
null_resource.sashwatk_compose_hpvs_curl (local-exec):   "errorCode": 200,
null_resource.sashwatk_compose_hpvs_curl (local-exec):   "result": "Hello World"
null_resource.sashwatk_compose_hpvs_curl (local-exec): }
null_resource.sashwatk_compose_hpvs_curl: Creation complete after 1m0s [id=5204537005849737091]

Tested with ICL

null_resource.sashwatk_compose_hpvs_curl: Provisioning with 'local-exec'...
null_resource.sashwatk_compose_hpvs_curl (local-exec): Executing: ["/bin/sh" "-c" "cat output/result.json"]
null_resource.sashwatk_compose_hpvs_curl (local-exec): {
null_resource.sashwatk_compose_hpvs_curl (local-exec):   "errorCode": 200,
null_resource.sashwatk_compose_hpvs_curl (local-exec):   "result": "Hello World"
null_resource.sashwatk_compose_hpvs_curl (local-exec): }
null_resource.sashwatk_compose_hpvs_curl: Creation complete after 1m0s [id=322730351532083479]