jbang integration

[jponge]

Golo offers scripting / shebang support, and resolves other Golo modules and jar dependencies by scanning the filesystem.

Another (complementary) approach would be to offer jbang integration so that we could specify dependencies in Golo files, like this non-prescriptive example:

# DEPS io.vertx:core:3.9.4
module hello

import io.vertx.core.Vertx

function main = |args| {
  let vertx = Vertx()
  vertx: setPeriodic(1000L, |tick| -> println("tick"))
}

Wether this should be done by contributing to jbang or providing some helper (...jbang script? catalog?) on the Golo side remains to be investigated.

[jponge]

/cc @maxandersen FYI