fix: correct generator command and templates

- Correct the `generator` command to use a string flag for the path.
- Update templates to use correct heap allocation annotation.
- Remove unnecessary code in templates.

Co-authored-by: mahmmoud.hassanein <mahmmoud.hassanein@gmail.com>

cli/hero.v

@@ -88,7 +88,7 @@ fn do() ! {
 	// herocmds.cmd_caddy(mut cmd)
 	// herocmds.cmd_zola(mut cmd)
 	// herocmds.cmd_juggler(mut cmd)
-	// herocmds.cmd_generator(mut cmd)
+	herocmds.cmd_generator(mut cmd)
 	// herocmds.cmd_docsorter(mut cmd)
 	// cmd.add_command(publishing.cmd_publisher(pre_func))
 	cmd.setup()