add app_roles terraform module for vault and declare erp app

hashicorp-vault/iac/providers.tf

@@ -0,0 +1,16 @@
+terraform {
+    required_providers {
+      vault = {
+        source = "vault"
+        version = "4.4.0"
+      }
+    }
+}
+
+provider vault {
+    address = "https://vault.arcodange.duckdns.org"
+    auth_login_jwt { # TERRAFORM_VAULT_AUTH_JWT environment variable
+        mount = "gitea_jwt"
+        role = "gitea_cicd"
+    }
+}