Add user manual for Azure DevOps template management

docs/TemplateBuilder.md

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+# User Manual for Template Extraction and Project Creation in Azure DevOps
+
+## Overview
+
+This document provides step-by-step instructions on how to extract a template from an existing Azure DevOps project and use the extracted template to create a new project.
+
+---
+
+## Prerequisites
+
+1. Ensure the following are installed on your machine:
+   - [.NET 8 SDK](https://dotnet.microsoft.com/download/dotnet/8.0)
+   - [Visual Studio](https://visualstudio.microsoft.com/) or any other preferred IDE.
+2. Ensure you have access to an Azure DevOps organization and the necessary permissions to create projects and extract templates.
+3. Have a valid Azure DevOps Personal Access Token (PAT) or be ready to authenticate using Azure AD.
+
+---
+
+## Template Extraction
+
+### Step 1: Start the Application
+1. Run the `ADOGenerator` application.
+2. You will see the following prompt:
+   ```
+   Welcome to Azure DevOps Demo Generator! This tool will help you generate a demo environment for Azure DevOps.
+   ```
+
+### Step 2: Select Template Extraction
+1. Choose the option to generate new artifacts using an existing project:
+   ```
+   Do you want to create a new template or create a new project using the demo generator project template?
+   1. Create a new project using the demo generator project template
+   2. Generate new artifacts using an existing project.
+   Enter the option number from the list of options above:
+   ```
+2. Enter `2` and press `Enter`.
+
+### Step 3: Authenticate
+1. Choose your authentication method:
+   ```
+   Choose authentication method: 1. Device Login using AD auth 2. Personal Access Token (PAT)
+   ```
+2. Enter `1` for Azure AD authentication or `2` for PAT authentication.
+   - For PAT authentication:
+     - Enter your Azure DevOps organization name.
+     - Enter your PAT when prompted.
+
+### Step 4: Select an Existing Project
+1. The application will list the available projects in your Azure DevOps organization.
+2. Select the project you want to extract the template from.
+
+### Step 5: Analyze and Generate Artifacts
+1. The application will analyze the selected project and prompt:
+   ```
+   Do you want to create artifacts yes/no:
+   ```
+2. Enter `yes` to generate the artifacts.
+3. The application will extract the following:
+   - Work items
+   - Build and release definitions
+   - Iterations
+   - Teams
+   - Service endpoints
+4. The extracted artifacts will be saved in the `Templates` directory under a folder named `CT-<ProjectName>`.
+
+---
+
+## Using the Extracted Template to Create a New Project
+
+### Step 1: Start the Application
+1. Run the `ADOGenerator` application.
+2. You will see the following prompt:
+   ```
+   Welcome to Azure DevOps Demo Generator! This tool will help you generate a demo environment for Azure DevOps.
+   ```
+
+### Step 2: Select Project Creation
+1. Choose the option to create a new project:
+   ```
+   Do you want to create a new template or create a new project using the demo generator project template?
+   1. Create a new project using the demo generator project template
+   2. Generate new artifacts using an existing project.
+   Enter the option number from the list of options above:
+   ```
+2. Enter `1` and press `Enter`.
+
+### Step 3: Authenticate
+1. Choose your authentication method:
+   ```
+   Choose authentication method: 1. Device Login using AD auth 2. Personal Access Token (PAT)
+   ```
+2. Enter `1` for Azure AD authentication or `2` for PAT authentication.
+   - For PAT authentication:
+     - Enter your Azure DevOps organization name.
+     - Enter your PAT when prompted.
+
+### Step 4: Select a Template
+1. The application will display the available templates in the `Templates` directory.
+2. Select the template you want to use by entering its corresponding number.
+
+### Step 5: Enter Project Details
+1. Enter the name of the new project when prompted:
+   ```
+   Enter the new project name:
+   ```
+
+### Step 6: Confirm Extension Installation
+1. If the selected template requires extensions, the application will display the required extensions and ask for confirmation:
+   ```
+   Do you want to proceed with this extension? (yes/No): press enter to confirm
+   ```
+
+### Step 7: Create the Project
+1. The application will create the project in Azure DevOps using the selected template.
+2. Once the project is created, you will see the following message:
+   ```
+   Project created successfully.
+   ```
+
+---
+
+## Additional Notes
+
+- If you encounter any issues during template extraction or project creation, check the console output for error messages.
+- Ensure that the `TemplateSetting.json` file is present in the `Templates` directory for the application to load templates.
+- If you skip updating the template settings, you can manually copy the generated artifacts and update the `TemplateSetting.json` file.
+
+---
+
+## Support
+
+For further assistance, refer to the SUPPORT.md file in the repository or contact the project maintainers.