feat(terraform): implement lockfile support for Terraform community providers (#10619)

...vider/__fixtures__/telmate-proxmox-versions-response.json

...ource/terraform-provider/__snapshots__/index.spec.ts.snap

lib/datasource/terraform-provider/index.spec.ts

lib/datasource/terraform-provider/index.ts

lib/datasource/terraform-provider/types.ts

...nager/terraform/lockfile/__snapshots__/index.spec.ts.snap

...anager/terraform/lockfile/__snapshots__/util.spec.ts.snap

lib/manager/terraform/lockfile/hash.spec.ts

lib/manager/terraform/lockfile/hash.ts

lib/manager/terraform/lockfile/index.spec.ts

lib/manager/terraform/lockfile/index.ts

lib/manager/terraform/lockfile/util.ts