docs: add mermaid docs (#6971)

* docs: add mermaid docs

* fix link

* add development.mdx

* add codebase

* add parseEdge

* add subgraph

* convertors

* tweaks

* structure the codebase

* add docs for new diagram type

* decouple docs for flowchart parser

* fix broken links

* use diagram instead of chart

* revert package.json

* tweaks

* point root folder of mermaid-to-excalidraw to installation

* remove installation from sidebar children

* fix link

* update flowchart parser diagram

* update parser overview diagram

* update more diagrams

* remove note about change in element stroke

* update diagram

* increase size limit for excalidraw production bundle

* tweaks

* add link

* move codebase after introduction

* dummy

---------

Co-authored-by: dwelle <luzar.david@gmail.com>

dev-docs/docs/@excalidraw/mermaid-to-excalidraw/development.mdx

@@ -0,0 +1,60 @@
+# Development
+
+This page relates to developing the `@excalidraw/mermaid-to-excalidraw` package itself.
+
+## Setting up in Local
+
+To set up the library in local, follow the below steps 👇🏼
+
+### Clone the Repository
+
+Go to [@excalidraw/mermaid-to-excalidraw](https://github.com/excalidraw/mermaid-to-excalidraw) and clone the repository to your local.
+
+
+```bash
+git clone git@github.com:excalidraw/mermaid-to-excalidraw.git
+```
+
+### Install the dependencies
+
+Using `npm`
+
+```bash
+npm install @excalidraw/mermaid-to-excalidraw
+```
+
+Using `yarn`
+
+```bash
+yarn add @excalidraw/mermaid-to-excalidraw
+```
+
+### Run the playground server
+
+```bash
+yarn start
+```
+
+This will start the playground server in port `1234` and you start playing with the playground.
+
+## Creating a test release
+
+We will soon simplify creating release via commenting on GitHub PR similar till then you can create a release by following the below steps
+
+1. Create the build
+
+```bash
+yarn build
+```
+
+This will create the dist folder which we need to publish next.
+
+2. Publish the library
+
+Update the package name and version in [package.json](https://github.com/excalidraw/mermaid-to-excalidraw/blob/master/package.json) and run the below command to publish it
+
+```bash
+yarn publish
+```
+
+And thats all your test release is successfully created 🎉