Added initial documentation version for Inference component (#13439)

src/README.md

@@ -35,7 +35,7 @@ flowchart LR
 ```
 
  * [core](./core/README.md) is responsible for model representation, contains a set of supported OpenVINO operations and base API for model modification.
- * [inference](./inference) provides the API for model inference on different accelerators.
+ * [inference](./inference/README.md) provides the API for model inference on different accelerators.
  * Transformations:
     * [common transformations](../src/common/transformations) - a set of common transformations which are used for model optimization
     * [low precision transformations](../src/common/low_precision_transformations) - a set of transformations which are needed to optimize quantized models

src/inference/.clang-format

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src/inference/README.md

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+# OpenVINO™ Inference
+
+OpenVINO Inference is a part of OpenVINO Runtime library. 
+The component is responsible for model inference on hardware device, provides API for OpenVINO Plugin development.
+
+OpenVINO Inference uses [the common coding style rules](../../docs/dev/coding_style.md).
+
+## Key person
+
+People from the [openvino-ie-maintainers](https://github.com/orgs/openvinotoolkit/teams/openvino-ie-maintainers) allows to approve and merge PRs to the inference component. These guys can help in case of any questions about the component.
+
+## Components
+
+OpenVINO Inference has the next structure:
+ * [dev_api](./dev_api) contains developer API which is needed to develop OpenVINO Plugins. In order to use this API, you need to link your component against `openvino::runtime::dev`.
+ * [include](./include) contains public API. Detailed information about provided API can be found [here](./docs/api_details.md).
+ * [src](./src) folder contains sources of the component.
+
+OpenVINO Inference has unit and functional tests. Unit tests are located in [src/tests/unit/inference_engine](../tests/unit/inference_engine/), functional tests locates [src/tests/functional/inference_engine](../tests/functional/inference_engine/).
+
+## See also
+ * [OpenVINO™ README](../../README.md)
+ * [OpenVINO Core Components](../README.md)
+ * [Developer documentation](../../docs/dev/index.md)
+

src/inference/dev_api/.clang-format

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src/inference/docs/api_details.md

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+# OpenVINO Inference API
+
+OpenVINO Inference API contains two folders:
+ * [ie](../include/ie/) - is a legacy API, this API is no longer being developed.
+ * [openvino](../include/openvino/) - current public API, this part is described below.
+
+## Components of public OpenVINO Inference API
+
+Public OpenVINO Inference API defines global header [openvino/openvino.hpp](../include/openvino/openvino.hpp) what includes all common OpenVINO headers. 
+All Inference components are concentrated inside the [openvino/runtime](../include/openvino/runtime) folder.
+
+To get more information about using of Inference API please read [How to integrate OpenVINO with your application](https://docs.openvino.ai/nightly/openvino_docs_OV_UG_Integrate_OV_with_your_application.html).
+Also the diagram of dependencies is presented on the [OpenVINO Architecture page](../../docs/architecture.md#openvino-inference-pipeline).
+
+## Components of OpenVINO Developer API
+
+OpenVINO Developer API is needed for OpenVINO plugin development. This process is detailed explained in the [OpenVINO Plugin Development Guide](https://docs.openvino.ai/nightly/openvino_docs_ie_plugin_dg_overview.html).
+
+## See also
+ * [OpenVINO™ Core README](../README.md)
+ * [OpenVINO™ README](../../../README.md)
+ * [Developer documentation](../../../docs/dev/index.md)
+