feat: support port ranges in switch_port_configs (e.g. port_range = "1-24")

Replace port_id with port_range in variable; add local to expand ranges
into individual port entries before creating meraki_switch_port resources.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sites/BCN01-LAB/variables.tf

@@ -100,11 +100,10 @@ variable "switch_access_policies" {
 variable "switch_port_configs" {
   type = list(object({
     serial               = string
-    port_id              = string
+    port_range           = string  # puerto único "1" o rango "1-24"
     name                 = optional(string, "")
     type                 = optional(string, "access")
     vlan                 = optional(number, null)
-    voice_vlan_id        = optional(number, null)
     access_policy_type   = optional(string, "Open")
     access_policy_number = optional(number, null)
   }))