Website rework

[lumi2021]

The Silk.NET website remade from scratch

As requested by Perksey, it is now built on Docusaurus. It style is completely made from scratch based on the current one.

To run the project:

• Make sure Node.js and NPM are installed and up to date;
• Make sure you have the last version of the fork;
• Run the nuke command with "website"

Unfortunately, Docusaurus uses git history information to set doc page's author, so I'm the author of everything now lol. It can be solved only if the respective authors do some changes on their .md files.

Any issues, questions or anything, pls comment here.

_{Perksey-senpai pls accept my PR 👉👈😖}