Refactor storage account variable names for clarity and consistency

variables.tf

@@ -6,21 +6,21 @@ variable "location" {
   type = string
 }
 
-variable "storage_account_base_name" {
+variable "base_name" {
   type    = string
   default = null
 }
 
-variable "storage_account_name" {
+variable "name" {
   type    = string
   default = null
 
   validation {
     condition = (
-      (var.storage_account_name != null && trimspace(var.storage_account_name) != "") ||
-      (var.storage_account_base_name != null && trimspace(var.storage_account_base_name) != "")
+      (var.name != null && trimspace(var.name) != "") ||
+      (var.base_name != null && trimspace(var.base_name) != "")
     )
-    error_message = "Provide storage_account_name or storage_account_base_name with a non-empty value."
+    error_message = "Provide name or base_name with a non-empty value."
   }
 }