add: missing tsconfig.json

Author: mariokernich

README.md

@@ -43,6 +43,19 @@ Add the `fontawesome.icons.lib` library dependency to your `manifest.json` and f
 }
 ```
 
+If using TypeScript, add `ui5-fontawesome-lib` to `types` definition.
+
+```json
+{
+  "compilerOptions": {
+    "types": [
+      "@sapui5/ts-types-esm",
+      "ui5-fontawesome-lib"
+    ]
+  }
+}
+```
+
 ### Method 1: Using NPM Package (Recommended)
 
 Install Dependencies
@@ -236,4 +249,4 @@ If you find this library helpful, please consider giving it a star on GitHub! 
 
 ---
 
-**Made with ❤️ for the SAP UI5 community**
+**Made with ❤️ for the SAP UI5 community**