add cloudflare DNS module

modules/cloudflare_dns/variables.tf

@@ -0,0 +1,35 @@
+variable "zone_name" {
+  type        = string
+  description = "Apex domain of the Cloudflare zone (e.g. domain.tld)"
+}
+
+variable "record_name" {
+  type        = string
+  description = "Subdomain label to create the record for (e.g. sub → sub.domain.tld)"
+}
+
+variable "record_type" {
+  type        = string
+  description = "DNS record type: A, AAAA, CNAME, MX, TXT"
+}
+
+variable "record_value" {
+  type        = string
+  description = "Record content (IP address, target hostname, text)"
+}
+
+variable "proxied" {
+  type        = bool
+  description = "Route through the Cloudflare proxy (orange cloud)"
+  default     = true
+}
+
+variable "ttl" {
+  type        = number
+  description = "TTL in seconds (ignored when proxied)"
+  default     = 3600
+  validation {
+    condition     = var.ttl >= 60 && var.ttl <= 86400
+    error_message = "ttl must be between 60 and 86400 seconds"
+  }
+}