Add README.md for analyticdb-rag solution

solution/tech-solution/analyticdb-rag/README.md

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+## Introduction
+
+<!-- DOCS_DESCRIPTION_CN -->
+本示例用于实现解决方案[AnalyticDB与通义千问搭建AI智能客服](https://www.aliyun.com/solution/tech-solution/analyticdb-rag), 涉及到专有网络（VPC）、交换机（VSwitch）、云服务器（ECS）、等资源的创建。
+<!-- DOCS_DESCRIPTION_CN -->
+
+<!-- DOCS_DESCRIPTION_EN -->
+This example is used to implement solution [Building an AI Smart Customer Service with AnalyticDB and Qwen](https://www.aliyun.com/solution/tech-solution/analyticdb-rag), which involves the creation and deployment of resources such as Virtual Private Cloud (VPC), VSwitch, Elastic Compute Service (ECS).
+<!-- DOCS_DESCRIPTION_EN -->
+<!-- BEGIN_TF_DOCS -->
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_alicloud"></a> [alicloud](#provider\_alicloud) | n/a |
+| <a name="provider_random"></a> [random](#provider\_random) | n/a |
+
+## Modules
+
+No modules.
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [alicloud_ecs_command.run_command](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/ecs_command) | resource |
+| [alicloud_ecs_invocation.invoke_script](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/ecs_invocation) | resource |
+| [alicloud_gpdb_instance.analyticdb](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/gpdb_instance) | resource |
+| [alicloud_instance.ecs_instance](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/instance) | resource |
+| [alicloud_security_group.security_group](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group) | resource |
+| [alicloud_security_group_rule.allow_app](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group_rule) | resource |
+| [alicloud_security_group_rule.allow_ssh](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group_rule) | resource |
+| [alicloud_vpc.vpc](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/vpc) | resource |
+| [alicloud_vswitch.vswitch](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/vswitch) | resource |
+| [random_string.random_string](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/string) | resource |
+| [alicloud_images.default](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/data-sources/images) | data source |
+| [alicloud_regions.current_region_ds](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/data-sources/regions) | data source |
+| [alicloud_zones.default](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/data-sources/zones) | data source |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_bai_lian_api_key"></a> [bai\_lian\_api\_key](#input\_bai\_lian\_api\_key) | 百炼 API-KEY，需开通百炼模型服务再获取 API-KEY，详情请参考：https://help.aliyun.com/zh/model-studio/developer-reference/get-api-key | `string` | n/a | yes |
+| <a name="input_bai_lian_app_id"></a> [bai\_lian\_app\_id](#input\_bai\_lian\_app\_id) | 百炼应用的应用ID | `string` | n/a | yes |
+| <a name="input_common_name"></a> [common\_name](#input\_common\_name) | 资源名称前缀 | `string` | `"RAG"` | no |
+| <a name="input_ecs_instance_password"></a> [ecs\_instance\_password](#input\_ecs\_instance\_password) | 服务器登录密码,长度8-30，必须包含三项（大写字母、小写字母、数字、 ()`~!@#$%^&*_-+=|{}[]:;'<>,.?/ 中的特殊符号）` | `string` | n/a | yes |
+| <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | ECS实例规格 | `string` | `"ecs.g6.large"` | no |
+| <a name="input_region"></a> [region](#input\_region) | 地域，例如：cn-hangzhou。所有地域及可用区请参见文档：https://help.aliyun.com/document_detail/40654.html#09f1dc16b0uke | `string` | `"cn-hangzhou"` | no |
+| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | 可用区ID | `string` | `"cn-hangzhou-h"` | no |
+<!-- END_TF_DOCS -->