Build without the deploy feature by default

Build tags setup changed to:

* !nodeploy => withdeploy
* nodeploy => !withdeploy

Also move the deploy feature out into its own release archives.

See #12994 for the primary motivation for this change. But this also greatly reduces the number of dependencies in Hugo when you don't need this feature and cuts the binary size greatly.

Fixes #12994

commands/deploy_off.go

@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build nodeploy
-// +build nodeploy
+//go:build !withdeploy
+// +build !withdeploy
 
 // Copyright 2024 The Hugo Authors. All rights reserved.
 //
@@ -31,6 +31,7 @@ package commands
 
 import (
 	"context"
+	"errors"
 
 	"github.com/bep/simplecobra"
 	"github.com/spf13/cobra"
@@ -40,7 +41,7 @@ func newDeployCommand() simplecobra.Commander {
 	return &simpleCommand{
 		name: "deploy",
 		run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
-			return nil
+			return errors.New("deploy not supported in this version of Hugo; install a release with 'withdeploy' in the archive filename or build yourself with the 'withdeploy' build tag. Also see https://github.com/gohugoio/hugo/pull/12995")
 		},
 		withc: func(cmd *cobra.Command, r *rootCommand) {
 			cmd.Hidden = true