chore(doc): Add terraform-docs config file and create Readme file.

Author: benoit-garcia

.terraform-docs.yaml

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+formatter: "markdown table"
+
+header-from: main.tf
+footer-from: ""
+
+recursive:
+  enabled: false
+
+sections:
+  hide: ["providers"]
+
+output:
+  file: "README.md"
+  mode: inject
+  template: |-
+    <!-- BEGIN_TF_DOCS -->
+    {{ .Content }}
+    <!-- END_TF_DOCS -->
+
+output-values:
+  enabled: false
+  from: ""
+
+sort:
+  enabled: true
+  by: required
+
+settings:
+  anchor: true
+  default: true
+  escape: false
+  hide-empty: true
+  html: false
+  indent: 2
+  required: true
+  sensitive: true
+  type: true

README.md

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+# Terraform / Scaleway
+
+## Purpose
+
+This repository is used to manage a Redis cluster on scaleway using terraform.
+
+## Usage
+
+- Setup the [scaleway provider](https://www.terraform.io/docs/providers/scaleway/index.html) in your tf file.
+- Include this module in your tf file. Refer to [documentation](https://www.terraform.io/docs/modules/sources.html#generic-git-repository).
+
+```hcl
+module "my_cluster" {
+  source  = "scaleway-terraform-modules/redis/scaleway"
+  version = "0.0.1"
+
+}
+```
+
+<!-- BEGIN_TF_DOCS -->
+## Requirements
+
+| Name | Version |
+|------|---------|
+| <a name="requirement_terraform"></a> [terraform](#requirement_terraform) | >= 0.13 |
+| <a name="requirement_scaleway"></a> [scaleway](#requirement_scaleway) | >= 2.3.0 |
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [scaleway_redis_cluster.this](https://registry.terraform.io/providers/scaleway/scaleway/latest/docs/resources/redis_cluster) | resource |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_cluster_name"></a> [cluster_name](#input_cluster_name) | Name of the Redis Cluster. | `string` | n/a | yes |
+| <a name="input_user_name"></a> [user_name](#input_user_name) | Identifier for the first user of the Redis Cluster. | `string` | n/a | yes |
+| <a name="input_user_password"></a> [user_password](#input_user_password) | Password for the first user of the Redis Cluster. | `string` | n/a | yes |
+| <a name="input_cluster_size"></a> [cluster_size](#input_cluster_size) | Nnumber of nodes in the Redis Cluster. | `number` | `1` | no |
+| <a name="input_cluster_version"></a> [cluster_version](#input_cluster_version) | Redis's Cluster version (e.g. `6.2.6`). | `string` | `"7.0.5"` | no |
+| <a name="input_instance_type"></a> [instance_type](#input_instance_type) | Type of Redis Cluster you want to create. | `string` | `"RED1-MICRO"` | no |
+| <a name="input_network_acls"></a> [network_acls](#input_network_acls) | List of acl rules (ie IP addresses authorized to connect to the cluster). | ```list(object({ ip = string description = string }))``` | ```[ { "description": "Allow all", "ip": "0.0.0.0/0" } ]``` | no |
+| <a name="input_project_id"></a> [project_id](#input_project_id) | ID of the project the namespace is associated with. Ressource will be created in the project set at the provider level if null. | `string` | `null` | no |
+| <a name="input_tags"></a> [tags](#input_tags) | Tags associated with the server and dedicated ip address. | `list(string)` | `[]` | no |
+| <a name="input_tls_enabled"></a> [tls_enabled](#input_tls_enabled) | Whether TLS is enabled or not. | `bool` | `true` | no |
+| <a name="input_zone"></a> [zone](#input_zone) | The zone in which the Redis Cluster should be created. Ressource will be created in the zone set at the provider level if null. | `string` | `null` | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| <a name="output_cluster_certificate"></a> [cluster_certificate](#output_cluster_certificate) | PEM of the certificate used by redis. |
+| <a name="output_cluster_id"></a> [cluster_id](#output_cluster_id) | ID of the Database Instance. |
+<!-- END_TF_DOCS -->
+
+## Authors
+
+Module is maintained with help from [the community](https://github.com/scaleway-terraform-modules/terraform-scaleway-domain/graphs/contributors).
+
+## License
+
+Mozilla Public License 2.0 Licensed. See [LICENSE](https://github.com/scaleway-terraform-modules/terraform-scaleway-domain/tree/master/LICENSE) for full details.