First development of the deploy action (#6)

Deploy js code to an instance of screeps.
Some debugging tools are implemented.

Reviewed-on: #6
Co-authored-by: Philipp Horstenkamp <philipp@horstenkamp.de>
Co-committed-by: Philipp Horstenkamp <philipp@horstenkamp.de>

node_modules/fetch-ponyfill/fetch-node.js

@@ -0,0 +1,36 @@
+'use strict';
+
+var fetch = require('node-fetch');
+
+function wrapFetchForNode(fetch) {
+  // Support schemaless URIs on the server for parity with the browser.
+  // https://github.com/matthew-andrews/isomorphic-fetch/pull/10
+  return function (u, options) {
+    if (typeof u === 'string' && u.slice(0, 2) === '//') {
+      return fetch('https:' + u, options);
+    }
+
+    return fetch(u, options);
+  };
+}
+
+module.exports = function (context) {
+  // Support webpack module import weirdness.
+  var fetchFn = fetch.default ? fetch.default : fetch;
+
+  // This modifies the global `node-fetch` object, which isn't great, since
+  // different callers to `fetch-ponyfill` which pass a different Promise
+  // implementation would each expect to have their implementation used. But,
+  // given the way `node-fetch` is implemented, this is the only way to make
+  // it work at all.
+  if (context && context.Promise) {
+    fetchFn.Promise = context.Promise;
+  }
+
+  return {
+    fetch: wrapFetchForNode(fetchFn),
+    Headers: fetch.Headers,
+    Request: fetch.Request,
+    Response: fetch.Response
+  };
+};