feat(terraform): updated configs for yc lab

terraform/main/etc/certificate.tf

@@ -0,0 +1,11 @@
+resource "yandex_cm_certificate" "default" {
+  name                = replace(lower(var.domain), ".", "-")
+  description         = "Default certificate for all resources"
+  deletion_protection = true
+
+  domains = tolist([var.domain, "*.${var.domain}"])
+
+  managed {
+    challenge_type = "DNS_CNAME"
+  }
+}