[Doc] Add docs and releasenote

Author: muneeb-jan

docs/data-sources/swr_domain_v2.md

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+---
+subcategory: "Software Repository for Container (SWR)"
+layout: "opentelekomcloud"
+page_title: "OpenTelekomCloud: opentelekomcloud_swr_domain_v2"
+sidebar_current: "docs-opentelekomcloud-datasource-swr-domain-v2"
+description: |-
+  Get details of an SWR Domain resource within OpenTelekomCloud.
+---
+
+Up-to-date reference of API arguments for SWR domain you can get at
+[documentation portal](https://docs.otc.t-systems.com/software-repository-container/api-ref/api)
+
+# opentelekomcloud_swr_domain_v2
+
+Get details of SWR image sharing domain resource within Open Telekom Cloud.
+
+## Example Usage
+
+```hcl
+variable "org_name" {}
+variable "repo_name" {}
+variable "access_domain" {}
+
+data opentelekomcloud_swr_domain_v2 domain_1 {
+  organization  = var.org_name
+  repository    = var.repo_name
+  access_domain = var.access_domain
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `organization` - (Required) The name of the repository organization.
+
+* `repository` - (Required) The name of the repository.
+
+* `access_domain` - (Required) The name of the domain for image sharing.
+
+-> `access_domain` should be an existing OTC domain.
+
+## Attributes Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `permission` - Permission to be granted.
+
+* `deadline` - End date of image sharing (UTC). 
+
+* `description` - Specifies SWR domain description.
+
+* `creator_id` - Username ID of the domain creator.
+
+* `creator_name` - Username of the domain creator.
+
+* `created` - Indicates the creation time.
+
+* `updated` - Indicates the domain when was last updated.
+
+* `status` - Indicates the domain is valid (`true`) or expired (`false`).

docs/data-sources/swr_domains_v2.md

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+---
+subcategory: "Software Repository for Container (SWR)"
+layout: "opentelekomcloud"
+page_title: "OpenTelekomCloud: opentelekomcloud_swr_domains_v2"
+sidebar_current: "docs-opentelekomcloud-datasource-swr-domains-v2"
+description: |-
+  Get list of SWR Domains within OpenTelekomCloud.
+---
+
+Up-to-date reference of API arguments for SWR domain you can get at
+[documentation portal](https://docs.otc.t-systems.com/software-repository-container/api-ref/api)
+
+# opentelekomcloud_swr_domains_v2
+
+Get list of SWR image sharing domains within Open Telekom Cloud.
+
+## Example Usage
+
+```hcl
+variable "org_name" {}
+variable "repo_name" {}
+
+data opentelekomcloud_swr_domains_v2 domains {
+  organization = var.org_name
+  repository   = var.repo_name
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `organization` - (Required) The name of the repository organization.
+
+* `repository` - (Required) The name of the repository.
+
+## Attributes Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `access_domains` - The list of the access domains. The structure is documented below:
+    * `access_domain` - (Required) The name of the domain for image sharing.
+    * `permission` - Permission to be granted.
+    * `deadline` - End date of image sharing (UTC). 
+    * `description` - Specifies SWR domain description.
+    * `creator_id` - Username ID of the domain creator.
+    * `creator_name` - Username of the domain creator.
+    * `created` - Indicates the creation time.
+    * `updated` - Indicates the domain when was last updated.
+    * `status` - Indicates the domain is valid (`true`) or expired (`false`).

releasenotes/notes/swr-add-data-sources-domain-14cf21366b5f08b5.yaml

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+---
+features:
+  - |
+    **[SWR]** Add new data source ``datasource/opentelekomcloud_swr_domain_v2`` (`#3321 <https://github.com/opentelekomcloud/terraform-provider-opentelekomcloud/pull/3321>`_).
+  - |
+    **[SWR]** Add new data source ``datasource/opentelekomcloud_swr_domains_v2`` (`#3321 <https://github.com/opentelekomcloud/terraform-provider-opentelekomcloud/pull/3321>`_).