Add Fastschema: A flexible Go web framework and Headless CMS.

README.md

@@ -2915,6 +2915,7 @@ _Full stack web frameworks._
 - [Confetti Framework](https://confetti-framework.github.io/docs/) - Confetti is a Go web application framework with an expressive, elegant syntax. Confetti combines the elegance of Laravel and the simplicity of Go.
 - [Don](https://github.com/abemedia/go-don) - A highly performant and simple to use API framework.
 - [Echo](https://github.com/labstack/echo) - High performance, minimalist Go web framework.
+- [Fastschema](https://github.com/fastschema/fastschema) - A flexible Go web framework and Headless CMS.
 - [Fiber](https://github.com/gofiber/fiber) - An Express.js inspired web framework build on Fasthttp.
 - [Fireball](https://github.com/zpatrick/fireball) - More "natural" feeling web framework.
 - [Flamingo](https://github.com/i-love-flamingo/flamingo) - Framework for pluggable web projects. Including a concept for modules and offering features for DI, Configareas, i18n, template engines, graphql, observability, security, events, routing & reverse routing etc.