Documentation for export/import a task (#3367)

* update documentation sorting

* update README.md and documentation

* fix linter errors

* update name sections

* fix links

* fix linter errors

* add 3D task documentation

* update documentation

* fix conflict README.md

* fix linter error v1

* update documentation

* fix mistakes

* update creating an annotation task section

* rename section

* fix numeration

* fix mistakes

* update docs

* fix grammar

* delete info about not implemented features

* fixed comments

Co-authored-by: Andrey Zhavoronkov <andrey.zhavoronkov@intel.com>
Co-authored-by: kirill.sizov <kirill.sizov@intel.com>

cvat/apps/documentation/backup_hld.md

@@ -1,54 +0,0 @@
-## Task and Project Import/Export functionality
-
-This document describes the high-level design for implementing import / export implementation for tasks and projects.
-
-API endpoints:
-
-- Import task
-
-  - endpoint: `/api/v1/tasks?action=import​`
-  - method: `POST`
-  - Content-Type: `multipart/form-data​`
-  - returns: json
-
-- Export task
-
-  - endpoint: `/api/v1/tasks/{id}?action=export​`
-  - method: `GET`
-  - returns: zip archive
-
-  The zip archive has the following structure:
-
-  ```
-   .
-   ├── data
-   │   ├── {user uploaded data}
-   │   ├── manifest.jsonl
-   ├── task.json
-   └── annotations.json
-  ```
-
-- Import project
-
-  - endpoint: `/api/v1/projects?action=import​`
-  - method: `POST`
-  - Content-Type: `multipart/form-data​`
-  - returns: json
-
-- Export project
-
-  - endpoint: `/api/v1/projects/<id>?action=export​`
-  - method: `GET`
-  - returns: zip archive
-
-  The zip archive has the following structure:
-
-  ```
-   .
-   ├── tasks
-   │   ├── task_1
-   │   ├── task_2
-   │   ├── ...
-   │   └── task_N
-   └── project.json
-  ```

site/content/en/docs/manual/advanced/export-import.md

@@ -0,0 +1,46 @@
+---
+title: 'Export/import a task'
+linkTitle: 'Export/import'
+weight: 25
+---
+
+In CVAT you can export and import tasks.
+This can be used to backup the task on your PC or to transfer the task to another server.
+
+## Export task
+
+To export a task, open the action menu and select `Export Task`.
+
+![](/images/image219_mapillary_vistas.jpg)
+
+As a result, you'll get a zip archive containing data, task specification and annotations with the following structure:
+
+```
+.
+├── data
+│   ├── {user uploaded data}
+│   ├── manifest.jsonl
+├── task.json
+└── annotations.json
+```
+
+Export task API:
+
+- endpoint: `/api/v1/tasks/{id}?action=export​`
+- method: `GET`
+- responses: 202, 201 with zip archive payload
+
+## Import task
+
+To import a task from an archive, go to the tasks page, click the `Import Task` button and select the archive you need.
+
+![](/images/image220.jpg)
+
+As a result, you'll get a task containing data, parameters, and annotations of the previously exported task.
+
+Import task API:
+
+- endpoint: `/api/v1/tasks?action=import​`
+- method: `POST`
+- Content-Type: `multipart/form-data​`
+- responses: 202, 201 with json payload

site/content/en/docs/manual/basics/creating_an_annotation_task.md

@@ -237,6 +237,8 @@ weight: 2
      - Velodyn points format 1.0 (Available in 3d task)
    - `Automatic Annotation` — automatic annotation with OpenVINO toolkit.
      Presence depends on how you build CVAT instance.
+   - `Export task` — Export a task into a zip archive.
+     Read more in the [export/import a task](/docs/manual/advanced/export-import/) section.
    - `Move to project` — Moving the task to the project (can be used to move a task from one project to another).
      Note that attributes reset during the moving process. In case of label mismatch,
      you can create or delete necessary labels in the project/task.