Add example and update docs

Author: Alexandre Nicolaie dit Clairville

docs/resources/elasticsearch_component_template.md

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+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "elasticstack_elasticsearch_component_template Resource - terraform-provider-elasticstack"
+subcategory: ""
+description: |-
+  Creates or updates a component template. Component templates are building blocks for constructing index templates that specify index mappings, settings, and aliases. See, https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-component-template.html
+---
+
+# elasticstack_elasticsearch_component_template (Resource)
+
+Creates or updates a component template. Component templates are building blocks for constructing index templates that specify index mappings, settings, and aliases. See, https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-component-template.html
+
+## Example Usage
+
+```terraform
+provider "elasticstack" {
+  elasticsearch {}
+}
+
+resource "elasticstack_elasticsearch_component_template" "my_template" {
+  name = "my_template"
+
+  template {
+    aliases {
+      name = "my_template_test"
+    }
+
+    settings = jsonencode({
+      number_of_shards = "3"
+    })
+  }
+}
+
+resource "elasticstack_elasticsearch_index_template" "my_template" {
+  name = "my_data_stream"
+
+  index_patterns = ["stream*"]
+  composed_of    = [elasticstack_elasticsearch_component_template.my_template.name]
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- **name** (String) Name of the component template to create.
+- **template** (Block List, Min: 1, Max: 1) Template to be applied. It may optionally include an aliases, mappings, or settings configuration. (see [below for nested schema](#nestedblock--template))
+
+### Optional
+
+- **elasticsearch_connection** (Block List, Max: 1) Used to establish connection to Elasticsearch server. Overrides environment variables if present. (see [below for nested schema](#nestedblock--elasticsearch_connection))
+- **id** (String) The ID of this resource.
+- **metadata** (String) Optional user metadata about the component template.
+- **version** (Number) Version number used to manage component templates externally.
+
+<a id="nestedblock--template"></a>
+### Nested Schema for `template`
+
+Optional:
+
+- **alias** (Block Set) Alias to add. (see [below for nested schema](#nestedblock--template--alias))
+- **mappings** (String) Mapping for fields in the index.
+- **settings** (String) Configuration options for the index. See, https://www.elastic.co/guide/en/elasticsearch/reference/current/index-modules.html#index-modules-settings
+
+<a id="nestedblock--template--alias"></a>
+### Nested Schema for `template.alias`
+
+Required:
+
+- **name** (String) The alias name. Index alias names support date math. See, https://www.elastic.co/guide/en/elasticsearch/reference/current/date-math-index-names.html
+
+Optional:
+
+- **filter** (String) Query used to limit documents the alias can access.
+- **index_routing** (String) Value used to route indexing operations to a specific shard. If specified, this overwrites the routing value for indexing operations.
+- **is_hidden** (Boolean) If true, the alias is hidden.
+- **is_write_index** (Boolean) If true, the index is the write index for the alias.
+- **routing** (String) Value used to route indexing and search operations to a specific shard.
+- **search_routing** (String) Value used to route search operations to a specific shard. If specified, this overwrites the routing value for search operations.
+
+
+
+<a id="nestedblock--elasticsearch_connection"></a>
+### Nested Schema for `elasticsearch_connection`
+
+Optional:
+
+- **ca_file** (String) Path to a custom Certificate Authority certificate
+- **endpoints** (List of String, Sensitive) A list of endpoints the Terraform provider will point to. They must include the http(s) schema and port number.
+- **insecure** (Boolean) Disable TLS certificate validation
+- **password** (String, Sensitive) A password to use for API authentication to Elasticsearch.
+- **username** (String) A username to use for API authentication to Elasticsearch.
+
+## Import
+
+Import is supported using the following syntax:
+
+```shell
+terraform import elasticstack_elasticsearch_component_template.my_template <cluster_uuid>/<component_name>
+```

examples/resources/elasticstack_elasticsearch_component_template/import.sh

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+terraform import elasticstack_elasticsearch_component_template.my_template <cluster_uuid>/<component_name>

examples/resources/elasticstack_elasticsearch_component_template/resource.tf

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+provider "elasticstack" {
+  elasticsearch {}
+}
+
+resource "elasticstack_elasticsearch_component_template" "my_template" {
+  name = "my_template"
+
+  template {
+    aliases {
+      name = "my_template_test"
+    }
+
+    settings = jsonencode({
+      number_of_shards = "3"
+    })
+  }
+}
+
+resource "elasticstack_elasticsearch_index_template" "my_template" {
+  name = "my_data_stream"
+
+  index_patterns = ["stream*"]
+  composed_of    = [elasticstack_elasticsearch_component_template.my_template.name]
+}