compose beta: update help text

[Copilot]

This PR updates azd's help text in several places to move the azd add command from alpha to beta status and improve the azd show command usage text.

Changes Made

azd help - Added azd add to Beta commands group

The azd add command now appears in the "Beta commands" section of the main help:

Beta commands
    add      	: Add a component to your project. (Beta)
    hooks    	: Develop, test and run hooks for a project.
    monitor  	: Monitor a deployed project.
    package  	: Packages the project's code to be deployed to Azure.
    pipeline 	: Manage and configure your deployment pipelines.
    restore  	: Restores the project's dependencies.
    template 	: Find and view template details.

azd add --help - Changed status from Alpha to Beta

Updated the command description:

Add a component to your project. (Beta)

azd show --help - Added optional resource argument

Updated the usage to support an optional resource name argument:

Usage
  azd show [resource name] [flags]

Implementation Details

• Added GroupingOptions with CmdGroupBeta to the add command registration in cmd/root.go
• Updated the short description in NewAddCmd() to display "(Beta)" instead of "(Alpha)"
• Added Use: "show [resource name]" to the NewShowCmd() command definition
• Updated all relevant test snapshots to reflect the changes

All tests pass and the changes are minimal and focused on the specific requirements.

Fixes #5239.

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• aka.ms
  • Triggering command: ./azd --help (dns block)
  • Triggering command: ./azd add --help (dns block)
  • Triggering command: ./azd show --help (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to my firewall allow list

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[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• aka.ms
  • Triggering command: /tmp/azd show --help (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to my firewall allow list