add terraform_docs configuration

.terraform-docs.yml

@@ -0,0 +1,63 @@
+formatter: template
+
+sections:
+  show:
+    - header
+    - requirements
+    - providers
+    - data-sources
+    - resources
+    - modules
+    - inputs
+    - outputs
+    - footer
+
+content: |-
+  {{ .Header }}
+
+  _<-- This file is autogenerated, please do not change. -->_
+
+  {{ .Requirements }}
+
+  {{ .Providers }}
+
+  {{ .Resources }}
+
+  {{ .Inputs }}
+
+  {{ .Outputs }}
+
+  ## Examples
+
+  Minimal configuration to install the desired resources with the module
+
+  ```hcl
+  {{ include "examples/min_main.tf" }}
+  ```
+
+  Advanced configuration to install the desired resources with the module
+
+  ```hcl
+  {{ include "examples/full_main.tf" }}
+  ```
+
+output:
+  mode: replace
+  template: |-
+    <!-- BEGIN_TF_DOCS -->
+    {{ .Content }}
+    <!-- END_TF_DOCS -->
+
+sort:
+  enabled: true
+  by: required
+
+settings:
+  anchor: false
+  escape: false
+  hide-empty: true
+  html: true
+  indent: 2
+  read-comments: true
+  required: true
+  type: true