Document basic storage moves API

doc/api/api_resources.md

@@ -139,6 +139,7 @@ The following API resources are available outside of project and group contexts
 | [Notification settings](notification_settings.md)  | `/notification_settings` (also available for groups and projects)       |
 | [Pages domains](pages_domains.md)                  | `/pages/domains` (also available for projects)                          |
 | [Projects](projects.md)                            | `/users/:id/projects` (also available for projects)                     |
+| [Project Repository Storage Moves](project_repository_storage_moves.md) | `/project_repository_storage_moves`                |
 | [Runners](runners.md)                              | `/runners` (also available for projects)                                |
 | [Search](search.md)                                | `/search` (also available for groups and projects)                      |
 | [Settings](settings.md) **(CORE ONLY)**            | `/application/settings`                                                 |

doc/api/project_repository_storage_moves.md

+# Project Repository Storage Move API
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/31285) in GitLab 13.0.
+
+To retrieve project repository storage moves using the API, you must [authenticate yourself](README.md#authentication) as an Administrator.
+
+## Retrieve all project repository storage moves
+
+```text
+GET /project_repository_storage_moves
+```
+
+By default, `GET` requests return 20 results at a time because the API results
+are paginated.
+
+Read more on [pagination](README.md#pagination).
+
+Example request:
+
+```shell
+curl --header "PRIVATE-TOKEN: <your_access_token>" 'https://primary.example.com/api/v4/project_repository_storage_moves'
+```
+
+Example response:
+
+```json
+[
+  {
+    "id": 1,
+    "created_at": "2020-05-07T04:27:17.234Z",
+    "state": "scheduled",
+    "source_storage_name": "default",
+    "destination_storage_name": "storage2",
+    "project": {
+      "id": 1,
+      "description": null,
+      "name": "project1",
+      "name_with_namespace": "John Doe2 / project1",
+      "path": "project1",
+      "path_with_namespace": "namespace1/project1",
+      "created_at": "2020-05-07T04:27:17.016Z"
+  }
+]
+```
+
+## Get a single project repository storage move
+
+```text
+GET /project_repository_storage_moves/:id
+```
+
+Parameters:
+
+| Attribute | Type | Required | Description |
+| --------- | ---- | -------- | ----------- |
+| `id` | integer | yes | The ID of the project repository storage move |
+
+Example request:
+
+```shell
+curl --header "PRIVATE-TOKEN: <your_access_token>" 'https://primary.example.com/api/v4/project_repository_storage_moves/1'
+```
+
+Example response:
+
+```json
+{
+  "id": 1,
+  "created_at": "2020-05-07T04:27:17.234Z",
+  "state": "scheduled",
+  "source_storage_name": "default",
+  "destination_storage_name": "storage2",
+  "project": {
+    "id": 1,
+    "description": null,
+    "name": "project1",
+    "name_with_namespace": "John Doe2 / project1",
+    "path": "project1",
+    "path_with_namespace": "namespace1/project1",
+    "created_at": "2020-05-07T04:27:17.016Z"
+}
+```