feat(page): add `--create-module` option

[imhoffd]

Aligning the page schematic with the component schematic, which already offers --create-module. The default for the page schematic is true, unlike the component schematic. To disable module creation, --create-module=false must be specified.

fixes https://github.com/ionic-team/ionic-cli/issues/3586

[rdlabo]

I look forward to seeing this feature merged!🙌