Segregate the CLI, Router, Kernel Logic

- [ ] Move the compilation logic out of the CLI (Already done in https://github.com/barelyhuman/dveep/blob/main/packages/dveep/src/lib/builder.js). Uses rollup instead of esbuild so needs the required modifications for the same

- [ ] Move the routing logic out of the kernel and the cli and instead it's own tiny module.
- [x] Scan the directory and generate module imports for every route and file
- [x] Construct the routes using a manifest or define a routing config
- [ ] Explain the behavior for the routes.js file and the pagination based route in docs