Docs: add server config (#849)

* add server config

* update

Author: aspeddro

server/config.md

@@ -0,0 +1,63 @@
+# Configuration
+
+The ReScript Language Server support the folowing configuration.
+
+These configurations are sent to the server on [initialization](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#initialize)
+
+```typescript
+interface config {
+  /**
+  * Format code using builtin formatter from server
+  * @default false
+  */
+  allowBuiltInFormatter: boolean;
+
+  /**
+  * Whether you want the extension to prompt for autostarting a ReScript build if a project is opened with no build running
+  * @default true
+  */
+  askToStartBuild: boolean;
+
+  /**
+  * Inlay Hint config
+  */
+  inlayHints: {
+    /**
+    * Enable Inlay Hint
+    * @defalt false
+    */
+    enable: boolean;
+    /**
+    * Maximum length of character for inlay hints. Set to null to have an unlimited length. Inlay hints that exceed the maximum length will not be shown
+    * @defalt 25
+    */
+    maxLength: number | null;
+  };
+  /**
+  * Enable CodeLens
+  * @default false
+  */
+  codeLens: boolean;
+  /**
+  * Path to the directory where cross-platform ReScript binaries are. You can use it if you haven't or don't want to use the installed ReScript from node_modules in your project.
+  * @default null
+  */
+  binaryPath: string | null;
+  /**
+  * Path to the directory where platform-specific ReScript binaries are. You can use it if you haven't or don't want to use the installed ReScript from node_modules in your project.
+  * @default null
+  */
+  platformPath: string | null;
+
+  /**
+  * Signature Help config
+  */
+  signatureHelp: {
+    /**
+    * Enable Signature Help
+    * @default true
+    */
+    enabled: boolean;
+  };
+}
+```