DEVDOCS-WEBSITE-19 - Fix meta tags

I implemented this feature for the devdocs website:

Md document files can have custom descriptions and keywords.
Hide of community note per page.
Default meta title, meta description, and keywords.
Title, description, and canonical URL for Facebook / X.
Title, meta title, meta description, meta keywords and canonical URL for team page.

To add custom meta descriptions, meta keywords, and hide community note the .md file should have this section on top of the file. For example for installation-guide.md:

---
description: Installation guide for Mage-OS, how to install it on server or local.
keywords: mage-os,magento 2,install, setup
communityNote: false
---

by default, a community note will be shown.

DEVDOCS-WEBSITE-19

mage-os / devdocs-website

DEVDOCS-WEBSITE-19 - Fix meta tags #59