mnfst/manifest: Portable backend to ship fast.

Manifest is a lightweight backend framework that allows developers to create complete backends with data models, storage, authentication, and admin panels using a single YAML configuration file. It targets rapid prototyping, microservices, CRUD applications, and headless CMS use cases. The tool provides REST APIs, JavaScript SDK, file storage, image resizing, and webhooks out of the box. Currently in beta, it emphasizes simplicity and speed for building MVPs and prototypes without complex setup processes.