docs: ✏️ Added readme file for the server package

Author: kostysh

packages/server/README.md

@@ -0,0 +1,54 @@
+# @windingtree/sdk-server
+
+The Winding Tree protocol coordination server package. It enables efficient coordination among multiple peers using the libp2p networking stack.
+
+## Installation
+
+```bash
+pnpm i @windingtree/sdk-server
+```
+
+## Key concepts
+
+This package revolves around setting up a server for facilitating peer-to-peer communication and message exchange in a distributed network. Key components include:
+
+- **CoordinationServer**: A class for creating a coordination server instance, with methods for starting and stopping the server.
+- **createServer**: A helper function for instantiating the CoordinationServer class.
+- **ServerOptions**: The options type for customizing the coordination server's behavior.
+
+## Usage
+
+```typescript
+import { ServerOptions, createServer } from '@windingtree/sdk-server';
+import { memoryStorage } from '@windingtree/sdk-storage';
+
+// Define your server options
+const options: ServerOptions = {
+  port: 33333, // Server port
+  peerKey: {...}, // Your peer key in JSON format
+  messagesStorageInit: memoryStorage.createInitializer(), // Your messages storage initializer
+};
+
+// Create a server
+const server = createServer(options);
+
+// Start the server
+await server.start();
+
+// Stop the server (e.g. in a shutdown handler)
+await server.stop();
+```
+
+## Documentation
+
+For full documentation and examples, visit [windingtree.github.io/sdk](https://windingtree.github.io/sdk)
+
+## Testing
+
+```bash
+pnpm test
+```
+
+## Contributing
+
+[Contribution guidelines](https://windingtree.github.io/sdk/#/docs/contribution)