add Kontext notebook

Author: openvino-dev-samples

notebooks/flux.1-kontext/README.md

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+# Image-to-image generation with Flux.1 Kontext and OpenVINO
+
+FLUX.1 Kontext [dev] is a 12 billion parameter rectified flow transformer capable of editing images based on text instructions. More details about model can be found in [blog post](https://bfl.ai/announcements/flux-1-kontext-dev) and [model card](https://huggingface.co/black-forest-labs/FLUX.1-Kontext-dev).
+
+<img src="https://github.com/user-attachments/assets/eaa37f44-6e9f-4c22-b5ed-eb1816e98cd0" width="1024"> 
+
+In this tutorial, we consider how to convert and optimize Flux.1 Kontext model using OpenVINO.
+
+>**Note**: Some demonstrated models can require at least 32GB RAM for conversion and running.
+
+### Notebook Contents
+
+In this demonstration, you will learn how to perform image-to-image generation using Flux.1 Kontext and OpenVINO. 
+
+Example of model work:
+
+**Input prompt**: *a tiny Yorkshire terrier astronaut hatching from an egg on the moon*
+![](https://github.com/user-attachments/assets/11733314-0b31-449c-9885-12ebf6365a58)
+
+The tutorial consists of the following steps:
+
+- Install prerequisites
+- Collect Pytorch model pipeline
+- Convert model to OpenVINO intermediate representation (IR) format 
+- Compress weights using NNCF
+- Prepare OpenVINO Inference pipeline
+- Run Image-to-Image generation
+- Launch interactive demo
+
+## Installation Instructions
+
+This is a self-contained example that relies solely on its own code.</br>
+We recommend running the notebook in a virtual environment. You only need a Jupyter server to start.
+For further details, please refer to [Installation Guide](../../README.md).
+
+<img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=5b5a4db0-7875-4bfb-bdbd-01698b5b1a77&file=notebooks/flux.1-kontext/README.md" />