feat: http-router

[mseeley]

A simple http route to operators mapping would be very helpful. The file associated each route is loaded and treated as an array of operators. routes functions like a dynamic include.

use: "@finch/http-router"
  params:
    port: 8080,
    routes:
      "/route/:param": "./file.js",
      "/route2/:param": "./file.yaml",

[mseeley]

Just leaving myself a note that this is more generally a web-hook operator.