feat: Delegation for Digital Earth Canada (DEC) (#428)

Creates zone delegation for the Digital Earth Canada PoC being run by
CSA/ECCC/NRCan, hosted in SSC Science Program's AWS tenant.

DEC is an effort to centrally provide environments for GoC scientists that
use Earth Observartion (EO) data for their tasks. It will host AI/ML
platforms, EO data (satellite, plane, drone, etc..) and other tools.

Co-authored-by: gcglinton <[email protected]>

terraform/dec.alpha.canada.ca.tf

@@ -0,0 +1,12 @@
+resource "aws_route53_record" "dec-alpha-canada-ca-NS" {
+  zone_id = aws_route53_zone.alpha-canada-ca-public.zone_id
+  name    = "dec.alpha.canada.ca"
+  type    = "NS"
+  records = [
+    "ns-1030.awsdns-00.org",
+    "ns-8.awsdns-01.com",
+    "ns-1885.awsdns-43.co.uk",
+    "ns-892.awsdns-47.net"
+  ]
+  ttl = "300"
+}