Create landing page

[vitonsky]

Closes #464

Created landing page

[vitonsky]

TODO:

• Make links visible in text
• Scroll to features
• Add favicon
• Align the layout
• Mobile version

Next iteration

• add analytics
• support section with a email for support and maybe discord invite for a community help. Also mention GH issues as efficient way to report bug.

Improvements

• Proofread the text
• SEO headers
• Move text to JSON, translate it and and implement language picker that will remember language and redirect
• Add docs section
• Add blog