frontend tooling description

docs/stack.md

@@ -21,6 +21,9 @@ And on the frontend:
 * [react](https://reactjs.org)
 * [Swagger](https://swagger.io) (interactive API docs)
 * [yarn](https://yarnpkg.com) (build tool)
+* [openapi-client-axios](https://www.npmjs.com/package/openapi-client-axios) (JS library for consuming OpenAPI-enabled APIs)
+* [formik](https://formik.org/) (forms)
+* [yup](https://www.npmjs.com/package/yup/v/1.3.3) (validation)
 
 ### Why Scala?
 
@@ -43,3 +46,7 @@ Tapir defines a programmer-friendly API for describing HTTP endpoints which can
 ### Why SBT and Yarn?
 
 To put it simply, [SBT](https://www.scala-sbt.org) is the build tool of choice for Scala, yarn - for JavaScript.
+
+### Why openapi-client-axios?
+
+It's a simple and easy-to-use JS library that generates API clients based on the OpenAPI specification with axios. It simplifies client-side development, comparing to OpenAPI which is more versatile and foundational but requires additional tooling to provide similar functionality.