✨📝 Updated the installation guide & other updates

Explored capabilities of Minlify and:

Enabled github CTA
Added sidebar links to our Changelog and Roadmap
Enabled the feedback functionality
Pointed the support link to our GH discussions
Updated the welcome page by "Why Glide?", "Features", "Installation", "License" sections
Added a separate pages to describe docker & bare metal installations
Created and added a banner to the main page
Configured favicon & made the logo more beautiful
Removed a ton of trash that came from the default template
Added the marketecture

EinStack / docs