Add backup vault backup plan module (#3536)

* ft/adding backup vault backup plan module

* ft/adding missing licence

* resource name updated

* corrected the variable sequece in readme.md

* corrected lint error

* corrected lint error

* addressed the comments

* fixing the lint issues

* addressed comments

* updated readme.md, changed sample project id in example

* updated readme.md

* added other resource [managment server, associations, default backup plan]

* new example added in readme

* ft/pass test cases

* fix: change the variables.tf file sequence

* fix: change module versions

* fix: change module versions

* fix: change module versions

* fix: change module versions

* updated varaible structure

* module name in version.tf

* added missing empyt line

* corrected readme.md tests

* remove project id to genric id

* removed extra file

* corrected syntex error

* applied terraform fmt

* fix/lint issue

* changed as per github comments

* Add inventories

---------

Co-authored-by: Yashwant Mahawar <myashwant@google.com>
Co-authored-by: Julio Castillo <jccb@google.com>

modules/backup-dr/versions.tf

@@ -0,0 +1,35 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Fabric release: v49.0.0
+
+terraform {
+  required_version = ">= 1.12.2"
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = ">= 7.6.0, < 8.0.0" # tftest
+    }
+    google-beta = {
+      source  = "hashicorp/google-beta"
+      version = ">= 7.6.0, < 8.0.0" # tftest
+    }
+  }
+  provider_meta "google" {
+    module_name = "google-pso-tool/cloud-foundation-fabric/modules/backup-dr:v49.0.0-tf"
+  }
+  provider_meta "google-beta" {
+    module_name = "google-pso-tool/cloud-foundation-fabric/modules/backup-dr:v49.0.0-tf"
+  }
+}