Add confirmation to extensions remove

pkg/cmd/extensions/command.go

@@ -121,7 +121,12 @@ func NewCmdExtensions(f *cmdutil.Factory) *cobra.Command {
 			Short: "Remove an installed extension",
 			Args:  cobra.ExactArgs(1),
 			RunE: func(cmd *cobra.Command, args []string) error {
-				return m.Remove(args[0])
+				if err := m.Remove(args[0]); err != nil {
+					return err
+				}
+				cs := io.ColorScheme()
+				fmt.Fprintf(io.Out, "%s Removed extension %s\n", cs.SuccessIcon(), args[0])
+				return nil
 			},
 		},
 	)

pkg/cmd/extensions/command_test.go

@@ -102,6 +102,7 @@ func TestNewCmdExtensions(t *testing.T) {
 					assert.Equal(t, "hello", calls[0].Name)
 				}
 			},
+			wantStdout: "✓ Removed extension hello\n",
 		},
 	}