Update Developer CLI for improved flexibility and consistency

[tjementum]

Summary & Motivation

Enhance the Developer CLI with several updates to improve naming consistency, timeout handling, and extensibility. These changes ensure a smoother development experience and better integration with GitHub and Azure services.

• Change the naming of Azure AD groups and App Registration to include the environment before the GitHub org/repo name, ensuring the environment is at the beginning
• Update the Developer CLI to use the default timeout from HttpClient when opening the WebApp. Previously, the CLI command waited 10 seconds for the WebApp to be ready, which was insufficient when node modules needed to be restored. Now, it uses the default HttpClient timeout of 100 seconds
• Add an option to create extensions to the configure-continuous-deployments CLI command, allowing consumers of PlatformPlatform to create their own commands when running pp configure-continuous-deployments
• Extract a helper class for GitHub to enable reuse in more CLI commands, simplifying the process of using GitHub information in various commands
• Run code cleanup on all CLI C# fixing line feed of last line

Checklist

• [x] I have added a Label to the pull-request
• [x] I have added tests, and done manual regression tests
• [x] I have updated the documentation, if necessary