[ADD] website_forum_seo: add new module for improve forum que/ans description


<b>Task:</b> https://www.odoo.com/web#id=9107&view_type=form&model=project.task&menu_id=3942&action=327
<b>Pad:</b> https://pad.odoo.com/p/r.aAXbFLdZvu62soZi


<b>New Module:</b> website_forum_seo
<b>VIew Demo:</b> https://www.youtube.com/watch?v=_lYH_GrRqso

Yes, Default we should impose <code>http://</code>, If schema doesn't exist in URL.

<b>Regarding <code>//www.odoo.com</code> is a valid URL</b> : yes is this valid URL also we can say <code>https://</code> (or <code>//</code>). But in Python UrlParse library can not get schema if URL is like <code>//www.odoo.com</code>. So I check manually to resolve this point. Thanks for viewing. :+1: 

And relative URL path can't cover in this task as per example of task specification.