May 2024 updates | updated README (#121)

* refactor / README.md to align with template

* refactor / README.md - add Table of Contents

* update / README - initial sync with template

CONTRIBUTING.md

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+# Contributing to Contoso Chat
+
+This project welcomes contributions and suggestions.  Most contributions require you to agree to a
+Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us
+the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.
+
+When you submit a pull request, a CLA bot will automatically determine whether you need to provide
+a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions
+provided by the bot. You will only need to do this once across all repos using our CLA.
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
+For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
+contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
+
+ - [Code of Conduct](#coc)
+ - [Issues and Bugs](#issue)
+ - [Feature Requests](#feature)
+ - [Submission Guidelines](#submit)
+
+## <a name="coc"></a> Code of Conduct
+Help us keep this project open and inclusive. Please read and follow our [Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
+
+## <a name="issue"></a> Found an Issue?
+If you find a bug in the source code or a mistake in the documentation, you can help us by
+[submitting an issue](#submit-issue) to the GitHub Repository. Even better, you can
+[submit a Pull Request](#submit-pr) with a fix.
+
+## <a name="feature"></a> Want a Feature?
+You can *request* a new feature by [submitting an issue](#submit-issue) to the GitHub
+Repository. If you would like to *implement* a new feature, please submit an issue with
+a proposal for your work first, to be sure that we can use it.
+
+* **Small Features** can be crafted and directly [submitted as a Pull Request](#submit-pr).
+
+## <a name="submit"></a> Submission Guidelines
+
+### <a name="submit-issue"></a> Submitting an Issue
+Before you submit an issue, search the archive, maybe your question was already answered.
+
+If your issue appears to be a bug, and hasn't been reported, open a new issue.
+Help us to maximize the effort we can spend fixing issues and adding new
+features, by not reporting duplicate issues.  Providing the following information will increase the
+chances of your issue being dealt with quickly:
+
+* **Overview of the Issue** - if an error is being thrown a non-minified stack trace helps
+* **Version** - what version is affected (e.g. 0.1.2)
+* **Motivation for or Use Case** - explain what are you trying to do and why the current behavior is a bug for you
+* **Browsers and Operating System** - is this a problem with all browsers?
+* **Reproduce the Error** - provide a live example or a unambiguous set of steps
+* **Related Issues** - has a similar issue been reported before?
+* **Suggest a Fix** - if you can't fix the bug yourself, perhaps you can point to what might be
+  causing the problem (line of code or commit)
+
+You can file new issues by providing the above information at the corresponding repository's [issues link](https://github.com/Azure-Samples/contoso-chat/issues/new).
+
+### <a name="submit-pr"></a> Submitting a Pull Request (PR)
+Before you submit your Pull Request (PR) consider the following guidelines:
+
+* Search the [repository](https://github.com/Azure-Samples/contoso-chat/pulls) for an open or closed PR
+  that relates to your submission. You don't want to duplicate effort.
+* Make your changes in a new git fork:
+* Commit your changes using a descriptive commit message
+* Push your fork to GitHub:
+* In GitHub, create a pull request
+* If we suggest changes then:
+  * Make the required updates.
+  * Rebase your fork and force push to your GitHub repository (this will update your Pull Request):
+
+    ```shell
+    git rebase master -i
+    git push -f
+    ```
+
+That's it! Thank you for your contribution!