docs: feat: ✨ init Docusaurus

Signed-off-by: slumbering <slumbering.pierrot@gmail.com>

tools/daggosaurus/README.md

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+# Website
+
+This website is built using [Docusaurus 2](https://docusaurus.io/), a modern static website generator.
+
+## Installation
+
+```console
+yarn install
+```
+
+## Local Development
+
+```console
+yarn start
+```
+
+This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
+
+## Build
+
+```console
+yarn build
+```
+
+This command generates static content into the `build` directory and can be served using any static contents hosting service.
+
+## Deployment
+
+```console
+GIT_USER=<Your GitHub username> USE_SSH=true yarn deploy
+```
+
+If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.