Add graph alias for rad app connections (#6489)

# Description

This PR adds an alias for `rad app graph` that points to `rad app
connections`.

It is a temporary update until we permanently update the command.

## Type of change

- This pull request fixes a bug in Radius and has an approved issue
(issue link required).

Partially addresses: #6473

## Auto-generated summary

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### Summary
:sparkles::recycle::memo:

<!--
1. :sparkles: This emoji represents the addition of a new feature or
enhancement, and can be used to highlight the main purpose of the pull
request, which is to implement a graphical view of the connections.
2. :recycle: This emoji represents the refactoring or improvement of
existing code, and can be used to indicate the modification of the
`NewCommand` function to add an alias for the existing command.
3. :memo: This emoji represents the addition or update of documentation,
and can be used to indicate the changes to the command help text and the
README file that explain the new alias and feature.
-->
Add "graph" alias for "connections" command in
`pkg/cli/cmd/app/connections/connections.go`. This enables users to view
a graphical representation of the connections for an application.

> _`NewCommand` adds_
> _alias for connections_
> _graph in the spring_

### Walkthrough
* Add an alias "graph" for the "connections" command
([link](https://github.com/radius-project/radius/pull/6489/files?diff=unified&w=0#diff-eb0083d8df9479acb2d5b36bf150aa410e371a26a01619d09c933a73994aa563L27-R31))

---------

Signed-off-by: Aaron Crawfis <[email protected]>
(cherry picked from commit 047da70)

pkg/cli/cmd/app/connections/connections.go

@@ -24,10 +24,11 @@ import (
 func NewCommand(factory framework.Factory) (*cobra.Command, framework.Runner) {
 	runner := NewRunner(factory)
 	cmd := &cobra.Command{
-		Use:   "connections",
-		Short: "Shows the connections for an application.",
-		Long:  `Shows the connections for an application`,
-		Args:  cobra.MaximumNArgs(1),
+		Use:     "connections",
+		Aliases: []string{"graph"},
+		Short:   "Shows the connections for an application.",
+		Long:    `Shows the connections for an application`,
+		Args:    cobra.MaximumNArgs(1),
 		Example: `
 # Show connections for current application
 rad app connections