chore(cli): rename Cmd to Command (#12616)

I think Command is cleaner and my original decision to use "Cmd"
a mistake.

Plus this creates better parity with cobra.

cli/cliui/agent_test.go

@@ -382,7 +382,7 @@ func TestAgent(t *testing.T) {
 			output := make(chan string, 100) // Buffered to avoid blocking, overflow is discarded.
 			logs := make(chan []codersdk.WorkspaceAgentLog, 1)
 
-			cmd := &serpent.Cmd{
+			cmd := &serpent.Command{
 				Handler: func(inv *serpent.Invocation) error {
 					tc.opts.Fetch = func(_ context.Context, _ uuid.UUID) (codersdk.WorkspaceAgent, error) {
 						t.Log("iter", len(tc.iter))
@@ -450,7 +450,7 @@ func TestAgent(t *testing.T) {
 		t.Parallel()
 		var fetchCalled uint64
 
-		cmd := &serpent.Cmd{
+		cmd := &serpent.Command{
 			Handler: func(inv *serpent.Invocation) error {
 				buf := bytes.Buffer{}
 				err := cliui.Agent(inv.Context(), &buf, uuid.Nil, cliui.AgentOptions{

cli/cliui/externalauth_test.go

@@ -22,7 +22,7 @@ func TestExternalAuth(t *testing.T) {
 	defer cancel()
 
 	ptty := ptytest.New(t)
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			var fetched atomic.Bool
 			return cliui.ExternalAuth(inv.Context(), inv.Stdout, cliui.ExternalAuthOptions{

cli/cliui/filter.go

@@ -11,12 +11,12 @@ var defaultQuery = "owner:me"
 // and allows easy integration to a CLI command.
 // Example usage:
 //
-//	func (r *RootCmd) MyCmd() *serpent.Cmd {
+//	func (r *RootCmd) MyCmd() *serpent.Command {
 //	  var (
 //	    filter cliui.WorkspaceFilter
 //	    ...
 //	  )
-//	  cmd := &serpent.Cmd{
+//	  cmd := &serpent.Command{
 //	    ...
 //	  }
 //	  filter.AttachOptions(&cmd.Options)

cli/cliui/output_test.go

@@ -101,7 +101,7 @@ func Test_OutputFormatter(t *testing.T) {
 			},
 		)
 
-		cmd := &serpent.Cmd{}
+		cmd := &serpent.Command{}
 		f.AttachOptions(&cmd.Options)
 
 		fs := cmd.Options.FlagSet()

cli/cliui/prompt_test.go

@@ -147,7 +147,7 @@ func TestPrompt(t *testing.T) {
 
 func newPrompt(ptty *ptytest.PTY, opts cliui.PromptOptions, invOpt func(inv *serpent.Invocation)) (string, error) {
 	value := ""
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			var err error
 			value, err = cliui.Prompt(inv, opts)
@@ -210,7 +210,7 @@ func TestPasswordTerminalState(t *testing.T) {
 
 // nolint:unused
 func passwordHelper() {
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			cliui.Prompt(inv, cliui.PromptOptions{
 				Text:   "Password:",

cli/cliui/provisionerjob_test.go

@@ -127,7 +127,7 @@ func newProvisionerJob(t *testing.T) provisionerJobTest {
 	}
 	jobLock := sync.Mutex{}
 	logs := make(chan codersdk.ProvisionerJobLog, 1)
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			return cliui.ProvisionerJob(inv.Context(), inv.Stdout, cliui.ProvisionerJobOptions{
 				FetchInterval: time.Millisecond,

cli/cliui/select_test.go

@@ -31,7 +31,7 @@ func TestSelect(t *testing.T) {
 
 func newSelect(ptty *ptytest.PTY, opts cliui.SelectOptions) (string, error) {
 	value := ""
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			var err error
 			value, err = cliui.Select(inv, opts)
@@ -72,7 +72,7 @@ func TestRichSelect(t *testing.T) {
 
 func newRichSelect(ptty *ptytest.PTY, opts cliui.RichSelectOptions) (string, error) {
 	value := ""
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			richOption, err := cliui.RichSelect(inv, opts)
 			if err == nil {
@@ -105,7 +105,7 @@ func TestMultiSelect(t *testing.T) {
 
 func newMultiSelect(ptty *ptytest.PTY, items []string) ([]string, error) {
 	var values []string
-	cmd := &serpent.Cmd{
+	cmd := &serpent.Command{
 		Handler: func(inv *serpent.Invocation) error {
 			selectedItems, err := cliui.MultiSelect(inv, items)
 			if err == nil {