docs: add docusaurus docs

* Created website for the docs inside /docs

* remove old docs and home page

* fix wrong redirection path

* remove most of the docs from the readme

* fix docs path

* undo package.json changes

* remove unused images

* rename "how to" route

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Co-authored-by: Elias Schneider <login@eliasschneider.com>

docs/docs/introduction.md

@@ -0,0 +1,24 @@
+---
+id: introduction
+---
+
+# Introduction
+Pingvin Share is self-hosted file sharing platform and an alternative for WeTransfer.
+
+## Features
+
+- Share files using a link
+- Unlimited file size (restricted only by disk space)
+- Set an expiration date for shares
+- Secure shares with visitor limits and passwords
+- Email recipients
+- Integration with ClamAV for security scans
+
+And more!
+
+## Get to know Pingvin Share
+
+- [Demo](https://pingvin-share.dev.eliasschneider.com)
+- [Review by DB Tech](https://www.youtube.com/watch?v=rWwNeZCOPJA)
+
+<img src="https://user-images.githubusercontent.com/58886915/225038319-b2ef742c-3a74-4eb6-9689-4207a36842a4.png" width="700"/>