Cover what Dokploy v0.30 added

Six new resources, all backed by endpoints that did not exist before v0.30.0
and verified end-to-end against a live v0.30.2 instance:

  dokploy_network         Docker networks, now first-class. Services attach
                          through network_ids, which is what deprecates
                          Compose's isolated_deployment upstream.
  dokploy_dns_provider    Cloudflare or Route53, so adding a domain creates
                          its DNS record.
  dokploy_vault_provider  Env values resolved from HashiCorp Vault, Infisical,
                          AWS, Doppler, Azure or Scaleway at deploy time, so
                          the secret never lands in Dokploy or in state.
  dokploy_schedule        Cron jobs in a container, a stack, or on a server.
  dokploy_volume_backup   Scheduled backups of a named volume — the companion
                          to a mount that persists.
  dokploy_libsql          The sixth managed database engine.

libsql.create is the strictest endpoint in the API: eleven keys required to
be present, several only meaningfully null, no generated service name, and it
returns `true` rather than the row. CreateDefaults and ListIDs absorb all
three so the resource behaves like every other database.

Also filled the gaps a field-by-field diff against the live schema turned up:
domain gains `enabled` (the v0.30.0 park-a-domain toggle), compose gains
create_env_file, icon and service_networks, application gains icon and
preview_require_collaborator_permissions, and mounts accept libsql.

DNS and vault credentials are masked by Dokploy on read, so `config` is
tagged noread and keeps the configured value, as the basic-auth password
already does.

internal/provider/schema_helpers.go

@@ -196,6 +196,12 @@ func optionalJSON(description string) schema.StringAttribute {
 	}
 }
 
+// enumValidator is the validator list for a string constrained to a fixed set,
+// for attributes assembled by hand rather than through enumString.
+func enumValidator(values []string) []validator.String {
+	return []validator.String{stringvalidator.OneOf(values...)}
+}
+
 func joinBackticked(values []string) string {
 	out := ""
 	for i, v := range values {
@@ -217,7 +223,18 @@ var (
 	composeSources   = []string{"git", "github", "gitlab", "bitbucket", "gitea", "raw"}
 	domainTypes      = []string{"compose", "application", "preview"}
 	mountTypes       = []string{"bind", "volume", "file"}
-	serviceTypes     = []string{"application", "postgres", "mysql", "mariadb", "mongo", "redis", "compose"}
+	serviceTypes     = []string{"application", "postgres", "mysql", "mariadb", "mongo", "redis", "compose", "libsql"}
 	protocolTypes    = []string{"tcp", "udp"}
 	publishModes     = []string{"ingress", "host"}
+
+	// Added in Dokploy v0.30.0.
+	networkDrivers = []string{"bridge", "overlay"}
+	shellTypes     = []string{"bash", "sh"}
+	scheduleTypes  = []string{"application", "compose", "server", "dokploy-server"}
+	sqldNodes      = []string{"primary", "replica"}
+
+	// volumeBackups accepts the service types plus libsql.
+	volumeBackupServiceTypes = []string{
+		"application", "postgres", "mysql", "mariadb", "mongo", "redis", "compose", "libsql",
+	}
 )