reorganize sample guides, add CodeGen top sample guide

Signed-off-by: alexsin368 <[email protected]>

examples/CodeGen/CodeGen_Guide.rst

@@ -0,0 +1,48 @@
+.. _Codegen_Guide:
+
+Codegen Sample Guide
+#####################
+
+.. note:: This guide is in its early development and is a work-in-progress with
+   placeholder content.
+
+Overview
+********
+
+The CodeGen example uses specialized AI models that went through training with datasets that 
+encompass repositories, documentation, programming code, and web data. With an understanding 
+of various programming languages, coding patterns, and software development concepts, the 
+CodeGen LLMs assist developers and programmers. The LLMs can be integrated into the developers' 
+Integrated Development Environments (IDEs) to have more contextual awareness to write more 
+refined and relevant code based on the suggestions. 
+
+Purpose
+*******
+* Code Generation: Streamline coding through Code Generation, enabling non-programmers to describe tasks for code creation.
+* Code Completion: Accelerate coding by suggesting contextually relevant snippets as developers type.
+* Code Translation and Modernization: Translate and modernize code across multiple programming languages, aiding interoperability and updating legacy projects.
+* Code Summarization: Extract key insights from codebases, improving readability and developer productivity.
+* Code Refactoring: Offer suggestions for code refactoring, enhancing code performance and efficiency.
+* AI-Assisted Testing: Assist in creating test cases, ensuring code robustness and accelerating development cycles.
+* Error Detection and Debugging: Detect errors in code and provide detailed descriptions and potential fixes, expediting debugging processes.
+
+How It Works
+************
+
+The CodeGen example uses an open-source code generation model with Text Generation Inference (TGI) 
+for serving deployment. It is presented as a Code Copilot application as shown in the diagram below. 
+
+.. figure:: /GenAIExamples/CodeGen/assets/img/codegen_architecture.png
+   :alt: CodeGen Architecture Diagram
+
+Deployment
+**********
+Here are some deployment options, depending on your hardware and environment:
+
+Single Node
++++++++++++++++
+.. toctree::
+   :maxdepth: 1
+
+   Xeon Scalable Processor </GenAIExamples/CodeGen/docker_compose/intel/cpu/xeon/README.md>
+   Gaudi AI Accelerator <deploy/gaudi>

examples/index.rst

@@ -9,10 +9,8 @@ GenAIExamples are designed to give developers an easy entry into generative AI,
    :maxdepth: 1
 
    ChatQnA/ChatQnA_Guide
-   ChatQnA/deploy/index
    AgentQnA/AgentQnA_Guide
-   CodeGen/deploy/gaudi.md
-   CodeGen/deploy/index
+   CodeGen/CodeGen_Guide
 
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