feat: add zarf package remove/inspect completion for cluster sources (

#2151)

## Description

- Added `zarf package remove` shell completion ability
- Added `zarf package inspect` shell completion ability
- Added `zarf package list` alias "ls" (since ls is so commonly used)
- Added `zarf package remove` alias "rm" (since rm is so commonly used)

## Related Issue

Fixes #2150 
Partial: #2154 (inspect only)

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [X] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)

## Checklist before merging

- [X] Test, docs, adr added or updated as needed
- [X] [Contributor Guide
Steps](https://github.com/defenseunicorns/zarf/blob/main/CONTRIBUTING.md#developer-workflow)
followed

---------

Co-authored-by: Wayne Starr <[email protected]>

src/cmd/package.go

@@ -144,11 +144,12 @@ var packageInspectCmd = &cobra.Command{
 			message.Fatalf(err, lang.CmdPackageInspectErr, err.Error())
 		}
 	},
+	ValidArgsFunction: getPackageCompletionArgs,
 }
 
 var packageListCmd = &cobra.Command{
 	Use:     "list",
-	Aliases: []string{"l"},
+	Aliases: []string{"l", "ls"},
 	Short:   lang.CmdPackageListShort,
 	Run: func(cmd *cobra.Command, args []string) {
 		// Get all the deployed packages
@@ -188,7 +189,7 @@ var packageListCmd = &cobra.Command{
 
 var packageRemoveCmd = &cobra.Command{
 	Use:     "remove { PACKAGE_SOURCE | PACKAGE_NAME } --confirm",
-	Aliases: []string{"u"},
+	Aliases: []string{"u", "rm"},
 	Args:    cobra.MaximumNArgs(1),
 	Short:   lang.CmdPackageRemoveShort,
 	Run: func(cmd *cobra.Command, args []string) {
@@ -203,6 +204,7 @@ var packageRemoveCmd = &cobra.Command{
 			message.Fatalf(err, lang.CmdPackageRemoveErr, err.Error())
 		}
 	},
+	ValidArgsFunction: getPackageCompletionArgs,
 }
 
 var packagePublishCmd = &cobra.Command{
@@ -300,6 +302,24 @@ func identifyAndFallbackToClusterSource() (src sources.PackageSource) {
 	return src
 }
 
+func getPackageCompletionArgs(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+	var pkgCandidates []string
+
+	c, err := cluster.NewCluster()
+	if err != nil {
+		return pkgCandidates, cobra.ShellCompDirectiveDefault
+	}
+
+	// Get all the deployed packages
+	deployedZarfPackages, _ := c.GetDeployedZarfPackages()
+	// Populate list of package names
+	for _, pkg := range deployedZarfPackages {
+		pkgCandidates = append(pkgCandidates, pkg.Name)
+	}
+
+	return pkgCandidates, cobra.ShellCompDirectiveDefault
+}
+
 func init() {
 	v := common.InitViper()