Add packaging section to README

Added packaging instructions for the NuGet package using GitHub Container Repository.

Author: daryl-fmk

README.md

@@ -24,6 +24,7 @@ This .NET SDK is an auto-generated client for the AndDone Secure API, built usin
 * [Installation](#installation)
 * [Configuration](#configuration)
 * [Quickstart](#quickstart)
+* [Packaging](#packaging)
 * [API Endpoints](#api-endpoints)
 * [Models](#models)
 * [Authorization](#authorization)
@@ -162,6 +163,91 @@ catch (ApiException e)
 
 ---
 
+## Packaging
+
+The GitHub Container Repository (GHCR) will be used to house the NuGet package for client consumption.  
+
+1. Create a GitHub Personal Access Token (PAT)
+   1. Login to GitHub
+   2. Select User -> Settings -> Developer Settings -> Personal access tokens -> Tokens (classic)
+   3. select Generate new token -> Generate new token (classic)
+   4. Give an identifiable description name
+   5. Copy Token to be used below as GH_PAT
+   6. Add the GHCR reference to the local machine by running:
+   dotnet nuget add source --username {GH_USER} --password {GH_PAT} --store-password-in-clear-text --name githubanddone "https://nuget.pkg.github.com/AndDone-LLC/index.json"
+
+2. Create Package and Push (command line)
+   1. Open a Powershell window
+   2. Create a new folder in the workspace folder of choice (ex: d:\workspace\anddone)
+   ```sh
+      cd d:\workspace
+      mkdir anddoneclientlibrary
+   ```
+   4. Change to the new folder
+   ```sh
+      cd anddoneclientlibrary
+   ```
+   5. Clone the repository
+   ```sh
+      git clone https://github.com/AndDone-LLC/AndDone-SecureAPI-ClientLibrary-DotNet-private.git
+   ````
+   6. Open nuget.config file in the Project root (AndDone-SecureAPI-ClientLibrary-DotNet-private\src\AndDoneSecureClientLibrary) and modify {GH_USER} and {GH_PAT}
+   7. Verify the <RepositoryUrl> in .csproj file is correct
+   8. Update the Version in .csproj as needed
+   7. Navigate to AndDone-SecureAPI-ClientLibrary-DotNet-private\src\AndDoneSecureClientLibrary
+      ```sh
+      cd src\AndDoneSecureClientLibrary
+      ```
+   9. Package the project to create the .nupkg file
+      ```sh
+      dotnet pack --configuration Release
+      ```
+   10. Push the package to GHCR
+      ```sh
+      dotnet nuget push "bin\Release\AndDoneSecureClientLibrary.1.0.0.nupkg" --api-key {GH_PAT} --source "githubanddone" --skip-duplicate
+      ```
+
+3. Create Package and Push (Visual Studio)
+   1. Open a Powershell window
+   2. Create a new folder in the workspace folder of choice (ex: d:\workspace\anddone)
+   ```sh
+      cd d:\workspace
+      mkdir anddoneclientlibrary
+   ```
+   4. Change to the new folder
+   ```sh
+      cd anddoneclientlibrary
+   ```
+   5. Clone the repository
+   ```sh
+      git clone https://github.com/AndDone-LLC/AndDone-SecureAPI-ClientLibrary-DotNet-private.git
+   ````
+   6. Open AndDoneSecureClientLibrary.sln
+   7. Change the build configuration dropdown to Release
+   4. Modify nuget.config file in Project root with {GH_USER} and {GH_PAT}
+   5. Verify <RepositoryUrl> in the .csproj file is correct
+   6. Update Version in the .csproj as needed
+   7. Right click on Solution in Solution Explorer and Build Solution
+   8. Right click on the Project in Solution Explorer and Pack 
+   9. In the Powershell window
+       ```sh
+      cd AndDone-SecureAPI-ClientLibrary-DotNet-private\src\AndDoneSecureClientLibrary
+      ```
+   10. Push the package to GHCR
+      ```sh
+      dotnet nuget push "bin\Release\AndDoneSecureClientLibrary.1.0.0.nupkg" --api-key {GH_PAT} --source "githubanddone" --skip-duplicate
+      ```
+
+4. Associate Package to Repository
+   1. In GitHub -> Select User -> Organizations
+   2. Select AndDone-LLC
+   3. Click Packages in top menu
+   4. Click Package Name
+   5. In right side, Click Package Settings
+   6. Click Add Repository and select Repository for Package
+   7. Verify by going to GitHub code page and the Package will be listed on the right side
+
+
 ## API Endpoints
 
 All URIs are relative to:
@@ -445,4 +531,4 @@ Authentication is handled via API keys in HTTP headers:
 ## Support & Versioning
 
 * **API Environments:** Use UAT for testing; switch to Production only after validation.
-* **Issues:** Report bugs or request features via the [GitHub Issues](https://github.com/anddone-kit/AndDone-SecureAPI-ClientLibrary-DotNet/issues) page.
+* **Issues:** Report bugs or request features via the [GitHub Issues](https://github.com/anddone-kit/AndDone-SecureAPI-ClientLibrary-DotNet/issues) page.